Threema. The Secure Messenger

- The Android app can now be used with the beta version of Threema 2.0 for desktop (“Main menu > Threema 2.0 for desktop (beta)”)
- Fixed various bugs that could occur when searching within a chat
- Display the correct name of a PDF file
- Improved notification of 1:1 calls
- Improved memory consumption when restoring large data backups

- Emoji reactions are now included in the data backup
- Fixed a bug that caused custom ringtones to be reset when starting the app

- New: You can now react to messages with emoji
- Fixed a bug concerning profile pictures in group calls

- Overhauled appearance of the agree/disagree icons (in preparation for the upcoming emoji reactions feature)
- Fixed a bug concerning the message status of chats containing missed calls

- Fixed a bug that crashes the app on some motorola devices when a chat is opened
- Fixed a bug regarding the display of voice messages on tablets
- Changes during message processing in preparation of multi device for android
- Reduce number of status messages when using polls

- Various improvements and bug fixes

- Fixed a bug in relation to “dynamic colors”
- Fixed a bug that triggered vibration notifications in “Do not disturb” mode

- Refactoring of notification channels: Individual notification settings need to be set again
- Media can now be edited before forwarding
- The edit history can now be viewed for edited messages

- Improved support for large font sizes in polls
- Fixed a bug in relation to the chat order in the web client
- Various improvements and bug fixes

Sent messages can now be edited or deleted on the recipient’s end

Various bug fixes

- Improved support for large font sizes
- Improved the display of notifications with media preview
- Various bug fixes

- Fixed various UI glitches
- GIFs are now rendered using Glide

Restored connection fallback functionality in case of blocked ports or IPv6 issues

- New communications layer
- Perfect Forward Secrecy improvements
- Swiss German translation
- WebRTC update
- Numerous optimizations and bug fixes

- Added a highlighter pen function to image editor
- Support for animated WebP images
- Numerous optimizations and bug fixes

* Fixed a bug where unknown group members were accidentally added to the contact list

Guided self-help for various system configuration problems
Bug fixes and performance improvements

- Fixed a crash that occurred when the app had no permission to show notifications
- Fixed an UI bug in the group details
- Added translations

- New: Star messages to quickly find them again in the future (starred messages appear in “⋮ > Starred messages”)
- Option for periodic deletion of old messages after a specified amount of time (Settings > Media & Storage > Storage Management > Delete automatically)
- Improved wakeup of desktop app and web client when using Threema Push
- Improved group management

Logging improvements
Bug fixes

Fix stability issues on some Android 13 phones

- Emoji 15 support
- Bug fixes

Fixed a bug related to rotating the phone when the light/dark mode of the device and the app were set differently
Improved PFS warning messages
Fixed minor UI bugs

- Refreshed UI design with support for Material You and Dynamic Colors
- Improved voice message player
- PFS enabled by default
- Various functional and performance improvements

Fix to prevent possible database corruption on some configurations

- Fixed a bug in relation to linking a phone number with a Threema ID in the setup wizard
- Fixed a bug that could prevent calls from being started in certain conditions
- When joining group calls with lots of participants, the mic is now automatically muted
- Improved indication of ongoing group calls in chat overview
- Improvements in relation to editing groups
- Other improvements and minor bug fixes

- Respect text formatting in captions of GIFs
- Bugfix for distorted voice messages on some smartphones
- Use current version of zip4j library (fixes CVE-2023-22899)
- Abort restore process if an incompatible backup file is used
- Forward voicemessages as voicemessages
- Do not leak metadata in data backup (Reported by Thore Göbel)
- Minor improvements and bug fixes

- Video preview is now seekable
- Improved precision when trimming videos
- Minor improvements and bug fixes

- New: end-to-end encrypted group calls (audio and video)
- New: agree/disagree feature also available in group chats
- New: edit received images on the fly and send them right back (tap and hold > pencil icon)
- New: send and receive messages with Perfect Forward Secrecy
- Security improvements and minor bug fixes

- New: end-to-end encrypted group calls (audio and video)
- New: agree/disagree feature also available in group chats
- New: edit received images on the fly and send them right back (tap and hold > pencil icon)
- New: send and receive messages with Perfect Forward Secrecy
- Security improvements and minor bug fixes

Improved UI of voice-message player
Various improvements in video editor
Minor bug fixes

The order of emojis has been adjusted to the Unicode standard
Threema can now also be used as a Maps app to display geo: -URIs from external apps
Performance improvements and bug fixes

Redesigned display of recently added contact with additional options
Support for geo: URIs
Bug fixes

Hotfix release

Emoji 14 support
Spam reporting option for new contacts
Various improvements and bug fixes

Many new emojis in accordance with the Unicode 13.1 standard.
Search fo emojis by name or meaning (available in 17 languages).
Deterministic colors for contacts and groups that do not have their own profile picture. These new colors are going to work across platforms and devices.
Improved scrolling performance in many lists.
Optimized layout for the Media Editor. Increased the number of media items that can be edited before sending to 256.
Many small improvements and bug fixes

Option to start a chat with multiple recipients
Additional translations (Norwegian Bokmål and Belarusian)
Bug fixes

Added a workaround for a crash when selecting text on some MIUI 13 devices
Implemented a workaround for a privacy issue in Gboard

Edit contacts before sharing
Distribution list optimizations
Improved QR scanner
New Threema Push service

This version fixes a crash on some Samsung devices running Android 11

Bug fixes
Ensure consistent phone number linkify behavior on buggy phones
Fix incorrect icon badge number display on some Sony devices
Possible fix for one-way audio in calls on some devices
Improved logging

Switch to MapLibre project for map display
Various bug fixes

Restore old QR code scanning behavior when tapping on "Scan ID" button in identity popup
Problems with unread messages badge on some Sony devices fixed
Improved handling of share targets and launcher shortcuts
Added hungarian translation
Various bug fixes and minor improvements

Update italian translation
Bug fixes

Update italian translation
Bug fixes

This version requires Android 5.0 or higher
Poll results no longer include users who didn't vote
Extended scoped storage support
Replace fingerprint with complete public key
Numerous under-the-hood improvements
Various small improvements and bug fixes

Minor bug fixes
Text adjustments in Settings

Minor bug fixes
Text adjustments in Settings

QR code scanner problem on Android 8 devices fixed

Added Slovak language support
Bugfixes:
- Volume down key out of order during calls
- "Show in Chat" not working on Samsung devices
- Glitch with individual isTyping setting fixed
- Improve image scaling quality
- Performance improvements

New: Contact-sepcific setting for read receipts and "is typing"
Bug fixes

Greatly improved contact synchronization
Added Catalan translation
Bugfixes

Selectable playback speed for voice messages
Improved media selection with ability to scroll through and select in large view
Filtering in archive screen
Bug fixes

Voicemails that have been listened to are now flagged with an ear symbol
Design tweaks
Bug fixes

Added "mark as unread" option
Improved compatibility of video transcoding
Better performance of media picker
Added translations to Japanese and Chinese (traditional)
Removed media search
Various small improvements and bug fixes

Various small bug fixes

New option to automatically blur or cover faces with an emoji in the image editor (works best with high-resolution images)
Create polls: re-sort answers using drag and drop
Media gallery: new "Show in chat" feature
Bug fixes, optimizations and design improvements

Redesigned media picker with optional image search
New global text search across all chats
Bigger groups with up to 256 members
Universal quoting
100 new emojis
Bug fixes and performance improvements

Video call stability improvements
Improved call screen usability
Bug fixes

Camera library update
Various bug fixes and improvements

Camera library update
Various bug fixes and improvements

Stability and performance fixes

Mentions: Type “@”, and select group members to directly address and mention them
New “Do Not Disturb” option in individual notification settings: Disable DND if you're mentioned in a chat.
Support for incognito mode, if supported by keyboard
Select multiple recipients when forwarding messages
Tap on quote to jump to original message
Share contacts from contact list
Numerous improvements for Threema Web
Many other improvements and bugs fixes

Mentions: Type “@”, and select group members to directly address and mention them
New “Do Not Disturb” option in individual notification settings: Disable DND if you're mentioned in a chat.
Support for incognito mode, if supported by keyboard
Select multiple recipients when forwarding messages
Tap on quote to jump to original message
Share contacts from contact list
Numerous improvements for Threema Web
Many other improvements and bugs fixes

Mentions: Type “@”, and select group members to directly address and mention them
New “Do Not Disturb” option in individual notification settings: Disable DND if you're mentioned in a chat.
Support for incognito mode, if supported by keyboard
Select multiple recipients when forwarding messages
Tap on quote to jump to original message
Share contacts from contact list
Numerous improvements for Threema Web
Many other improvements and bugs fixes

Workaround for CyanogenMod/LineageOS bug
Emoji picker performance improvements

Workaround for CyanogenMod/LineageOS bug
Emoji picker performance improvements

More than 800 new emojis. Now supporting Unicode 10.
Improved emoji picker: Remove items from recent emojis list with a long tap
Setting to enable/disable auto download of pictures and voice messages depending on network type
Various improvements and bug fixes

More than 800 new emojis. Now supporting Unicode 10.
Improved emoji picker: Remove items from recent emojis list with a long tap
Setting to enable/disable auto download of pictures and voice messages depending on network type
Various improvements and bug fixes

Tag chats by swiping them horizontally
Adjustable notification priority
Preserve original caption on message forward
Video player: Improved compatibility with some Huawei devices
Threema Web: Optimized battery usage
Threema Calls: Fix incompatibility with certain smartwatches
Security: Validate URIs returned by Android Documents UI File Picker
Various small fixes and performance improvements

* Threema Calls: Tap-proof end-to-end encrypted voice calls
* Integrated multimedia player
* Improved display of pictures sent as a file
* Record voice messages without a plugin
* This release requires Android 4.1 or higher

* Threema Calls: Tap-proof end-to-end encrypted voice calls
* Integrated multimedia player
* Improved display of pictures sent as a file
* Record voice messages without a plugin
* This release requires Android 4.1 or higher

Fix for sporadic sqlcipher slowdown on some devices
Workaround for non-blinking LED on Android 7.0 devices when device is set to silent & no vibration

Improved Android O compatibility
Experimental «immediate push notifications» option
Bug fixes

Improved Android O compatibility
Experimental «immediate push notifications» option
Bug fixes

Various bug fixes
Improved reliability of push notifications on some configurations
Fixed double posting of GIFs

Various bug fixes
Improved reliability of push notifications on some configurations
Fixed double posting of GIFs

Various bug fixes
Improved reliability of push notifications on some configurations
Fixed double posting of GIFs

* Bug fixes

* Bug fixes

* Bug fixes

* Bug fixes

* Bug fixes

* Paint on your pictures, add stickers and text before sending
* Threema Web: Improved compatibility with
corporate firewalls
* Several minor improvements and bug fixes

* Paint on your pictures, add stickers and text before sending
* Threema Web: Improved compatibility with
corporate firewalls
* Several minor improvements and bug fixes

* Paint on your pictures, add stickers and text before sending
* Threema Web: Improved compatibility with
corporate firewalls
* Several minor improvements and bug fixes

* Paint on your pictures, add stickers and text before sending
* Threema Web: Improved compatibility with
corporate firewalls
* Several minor improvements and bug fixes

* Threema Web – chat from your desktop! With the new web client
* Automatically create backups on Google
Drive (Android 6.0+)
* Several minor improvements and bug fixes
* Fixed appearance with right-to-left
languages

* Threema Web – chat from your desktop! With the new web client
* Automatically create backups on Google
Drive (Android 6.0+)
* Several minor improvements and bug fixes

* Optimizations and bug fixes

* Support for emoji skin colors
* Minor improvements and bug fixes

* Quote feature for text messages
* Improved navigation drawer design and streamlined navigation
* Integration of Threema Channel
* Support for Rumantsch language
* Various improvements and optimizations

* Easier scheduling of appointments thanks to date/time picker for polls
* Various bug fixes

* Message drafts
* Bigger single emojis (optional)
* Design tweaks and bug fixes

* Quick select popup dialog for images
* Design enhancements
* Improved image preview dialog
* Many improvements and bug fixes

* Add captions to images and files
* Mark conversations as private and hide them from prying eyes
* Performance improvements and bug fixes

Threema is the world’s favorite secure messenger and keeps your data out of the hands of hackers, corporations and governments. Threema can be used completely anonymously, and offers a rich set of features.

HIGHEST ENCRYPTION STRENGTH
Threema encrypts ALL your communications END-TO-END including messages, group chats, media files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on user’s devices to prevent backdoor access or copies.

GUARANTEED PRIVACY
Threema is designed to generate as little data on servers as possible – this is a core part of our concept. Group memberships and contact lists are managed on your device only, and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including meta data.

COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.

• create a poll with the unique poll feature
• write text and send voice messages
• send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
• share videos, pictures and locations
• create group chats, add and remove members at any time
• synchronize your contacts (optional)
• verify the identity of a contact by scanning their personal QR code
• use Threema as anonymous instant messaging tool

UNIQUE POLL FEATURE
The integrated poll feature in Threema makes decisions easy. Easily poll your friends on anything in just a few simple steps and get immediate results.

FULL ANONYMITY
Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.

TRUSTED CONTACTS
We let users confirm trusted contacts with a QR code or a key fingerprint to prevent man in the middle attacks.

INDEPENDENT COMPANY
We are a 100% independent and self-financed company in the heart of Switzerland with its own servers and in-house software development. Switzerland is a country with some of the most user friendly privacy laws in the world.

PERMISSIONS
Threema is a private messenger, but it still requires the following permissions (only used if the corresponding functionality is requested).

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be further extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

Threema is the world’s favorite secure messenger and keeps your data out of the hands of hackers, corporations and governments. Threema can be used completely anonymously, and offers a rich set of features.

HIGHEST ENCRYPTION STRENGTH
Threema encrypts ALL your communications END-TO-END including messages, group chats, media files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on user’s devices to prevent backdoor access or copies.

GUARANTEED PRIVACY
Threema is designed to generate as little data on servers as possible – this is a core part of our concept. Group memberships and contact lists are managed on your device only, and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including meta data.

COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.

• create a poll with the unique poll feature
• write text and send voice messages
• send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
• share videos, pictures and locations
• create group chats, add and remove members at any time
• synchronize your contacts (optional)
• verify the identity of a contact by scanning their personal QR code
• use Threema as anonymous instant messaging tool

UNIQUE POLL FEATURE
The integrated poll feature in Threema makes decisions easy. Easily poll your friends on anything in just a few simple steps and get immediate results.

FULL ANONYMITY
Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.

TRUSTED CONTACTS
We let users confirm trusted contacts with a QR code or a key fingerprint to prevent man in the middle attacks.

INDEPENDENT COMPANY
We are a 100% independent and self-financed company in the heart of Switzerland with its own servers and in-house software development. Switzerland is a country with some of the most user friendly privacy laws in the world.

PERMISSIONS
Threema is a private messenger, but it still requires the following permissions (only used if the corresponding functionality is requested).

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be further extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

Threema is the world’s favorite secure messenger and keeps your data out of the hands of hackers, corporations and governments. Threema can be used completely anonymously, and offers a rich set of features.

HIGHEST ENCRYPTION STRENGTH
Threema encrypts ALL your communications END-TO-END including messages, group chats, media files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on user’s devices to prevent backdoor access or copies.

GUARANTEED PRIVACY
Threema is designed to generate as little data on servers as possible – this is a core part of our concept. Group memberships and contact lists are managed on your device only, and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including meta data.

COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.

• create a poll with the unique poll feature
• write text and send voice messages
• send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
• share videos, pictures and locations
• create group chats, add and remove members at any time
• synchronize your contacts (optional)
• verify the identity of a contact by scanning their personal QR code
• use Threema as anonymous instant messaging tool

UNIQUE POLL FEATURE
The integrated poll feature in Threema makes decisions easy. Easily poll your friends on anything in just a few simple steps and get immediate results.

FULL ANONYMITY
Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.

TRUSTED CONTACTS
We let users confirm trusted contacts with a QR code or a key fingerprint to prevent man in the middle attacks.

INDEPENDENT COMPANY
We are a 100% independent and self-financed company in the heart of Switzerland with its own servers and in-house software development. Switzerland is a country with some of the most user friendly privacy laws in the world.

PERMISSIONS
Threema is a private messenger, but it still requires the following permissions (only used if the corresponding functionality is requested).

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be further extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

Threema is the world’s favorite secure messenger and keeps your data out of the hands of hackers, corporations and governments. Threema can be used completely anonymously, and offers a rich set of features.

HIGHEST ENCRYPTION STRENGTH
Threema encrypts ALL your communications END-TO-END including messages, group chats, media files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on user’s devices to prevent backdoor access or copies.

GUARANTEED PRIVACY
Threema is designed to generate as little data on servers as possible – this is a core part of our concept. Group memberships and contact lists are managed on your device only, and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including meta data.

COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.

• create a poll with the unique poll feature
• write text and send voice messages
• send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
• share videos, pictures and locations
• create group chats, add and remove members at any time
• synchronize your contacts (optional)
• verify the identity of a contact by scanning their personal QR code
• use Threema as anonymous instant messaging tool

UNIQUE POLL FEATURE
The integrated poll feature in Threema makes decisions easy. Easily poll your friends on anything in just a few simple steps and get immediate results.

FULL ANONYMITY
Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.

TRUSTED CONTACTS
We let users confirm trusted contacts with a QR code or a key fingerprint to prevent man in the middle attacks.

INDEPENDENT COMPANY
We are a 100% independent and self-financed company in the heart of Switzerland with its own servers and in-house software development. Switzerland is a country with some of the most user friendly privacy laws in the world.

PERMISSIONS
Threema is a private messenger, but it still requires the following permissions (only used if the corresponding functionality is requested).

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be further extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

Threema is the world’s favorite secure messenger and keeps your data out of the hands of hackers, corporations and governments. Threema can be used completely anonymously, and offers a rich set of features.

HIGHEST ENCRYPTION STRENGTH
Threema encrypts ALL your communications END-TO-END including messages, group chats, media files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on user’s devices to prevent backdoor access or copies.

GUARANTEED PRIVACY
Threema is designed to generate as little data on servers as possible – this is a core part of our concept. Group memberships and contact lists are managed on your device only, and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including meta data.

COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.

• create a poll with the unique poll feature
• write text and send voice messages
• send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
• share videos, pictures and locations
• create group chats, add and remove members at any time
• synchronize your contacts (optional)
• verify the identity of a contact by scanning their personal QR code
• use Threema as anonymous instant messaging tool

UNIQUE POLL FEATURE
The integrated poll feature in Threema makes decisions easy. Easily poll your friends on anything in just a few simple steps and get immediate results.

FULL ANONYMITY
Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.

TRUSTED CONTACTS
We let users confirm trusted contacts with a QR code or a key fingerprint to prevent man in the middle attacks.

INDEPENDENT COMPANY
We are a 100% independent and self-financed company in the heart of Switzerland with its own servers and in-house software development. Switzerland is a country with some of the most user friendly privacy laws in the world.

PERMISSIONS
Threema is a private messenger, but it still requires the following permissions (only used if the corresponding functionality is requested).

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be further extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

Threema is the world’s favorite secure messenger and keeps your data out of the hands of hackers, corporations and governments. Threema can be used completely anonymously, and offers a rich set of features.

HIGHEST ENCRYPTION STRENGTH
Threema encrypts ALL your communications END-TO-END including messages, group chats, media files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on user’s devices to prevent backdoor access or copies.

GUARANTEED PRIVACY
Threema is designed to generate as little data on servers as possible – this is a core part of our concept. Group memberships and contact lists are managed on your device only, and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including meta data.

COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.

• create a poll with the unique poll feature
• write text and send voice messages
• send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
• share videos, pictures and locations
• create group chats, add and remove members at any time
• synchronize your contacts (optional)
• verify the identity of a contact by scanning their personal QR code
• use Threema as anonymous instant messaging tool

UNIQUE POLL FEATURE
The integrated poll feature in Threema makes decisions easy. Easily poll your friends on anything in just a few simple steps and get immediate results.

FULL ANONYMITY
Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.

TRUSTED CONTACTS
We let users confirm trusted contacts with a QR code or a key fingerprint to prevent man in the middle attacks.

INDEPENDENT COMPANY
We are a 100% independent and self-financed company in the heart of Switzerland with its own servers and in-house software development. Switzerland is a country with some of the most user friendly privacy laws in the world.

PERMISSIONS
Threema is a private messenger, but it still requires the following permissions (only used if the corresponding functionality is requested).

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be further extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

Threema is the world’s favorite secure messenger and keeps your data out of the hands of hackers, corporations and governments. Threema can be used completely anonymously, and offers a rich set of features.

HIGHEST ENCRYPTION STRENGTH
Threema encrypts ALL your communications END-TO-END including messages, group chats, media files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on user’s devices to prevent backdoor access or copies.

GUARANTEED PRIVACY
Threema is designed to generate as little data on servers as possible – this is a core part of our concept. Group memberships and contact lists are managed on your device only, and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including meta data.

COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.

• create a poll with the unique poll feature
• write text and send voice messages
• send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
• share videos, pictures and locations
• create group chats, add and remove members at any time
• synchronize your contacts (optional)
• verify the identity of a contact by scanning their personal QR code
• use Threema as anonymous instant messaging tool

UNIQUE POLL FEATURE
The integrated poll feature in Threema makes decisions easy. Easily poll your friends on anything in just a few simple steps and get immediate results.

FULL ANONYMITY
Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.

TRUSTED CONTACTS
We let users confirm trusted contacts with a QR code or a key fingerprint to prevent man in the middle attacks.

INDEPENDENT COMPANY
We are a 100% independent and self-financed company in the heart of Switzerland with its own servers and in-house software development. Switzerland is a country with some of the most user friendly privacy laws in the world.

PERMISSIONS
Threema is a private messenger, but it still requires the following permissions (only used if the corresponding functionality is requested).

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be further extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

Threema is the world’s favorite secure messenger and keeps your data out of the hands of hackers, corporations and governments. Threema can be used completely anonymously, and offers a rich set of features.

HIGHEST ENCRYPTION STRENGTH
Threema encrypts ALL your communications END-TO-END including messages, group chats, media files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on user’s devices to prevent backdoor access or copies.

GUARANTEED PRIVACY
Threema is designed to generate as little data on servers as possible – this is a core part of our concept. Group memberships and contact lists are managed on your device only, and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including meta data.

COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.

• create a poll with the unique poll feature
• write text and send voice messages
• share videos, pictures and locations
• create group chats, add and remove members at any time
• synchronize your contacts (optional)
• verify the identity of a contact by scanning their personal QR code
• use Threema as anonymous instant messaging tool

UNIQUE POLL FEATURE
The integrated poll feature in Threema makes decisions easy. Easily poll your friends on anything in just a few simple steps and get immediate results.

FULL ANONYMITY
Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.

TRUSTED CONTACTS
We let users confirm trusted contacts with a QR code or a key fingerprint to prevent man in the middle attacks.

INDEPENDENT COMPANY
We are a 100% independent and self-financed company in the heart of Switzerland with its own servers and in-house software development. Switzerland is a country with some of the most user friendly privacy laws in the world.

PERMISSIONS
Threema is a private messenger, but it still requires the following permissions (only used if the corresponding functionality is requested).

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be further extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

Threema is a mobile messaging app that puts security and privacy first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages. You can use Threema completely anonymously, without giving away personal information such as phone numbers or email addresses. Your messages will be deleted from our servers immediately after being delivered. Therefore, you're perfectly protected against data abuse.

--
SECURE END-TO-END ENCRYPTION
Compared to other popular messaging apps (including those claiming to use encryption), even we as the server operator have absolutely no way to read your messages.

--
HIGH LEVEL OF DATA PROTECTION
Threema takes data privacy very seriously. We strive to store only the absolutely necessary information for the shortest possible time. We guarantee that we do not collect, evaluate or sell customer data. That is our promise.

--
STANDARD FEATURES
Threema is not only secure but also very user friendly and covers the basic features of a mobile messenger.

• create Poll
• write text messages
• send videos and pictures
• share locations
• send voice messages
• create group chats and add new members
• synchronize your contacts (optional)

--
SPECIAL FEATURES
Threema differs from other mobile messenger by some special features.

• all text and voice messages as well as pictures, videos, and GPS locations are asymmetrically end-to-end encrypted
• even group chats are end-to-end encrypted
• verify the identity of a contact by scanning their personal QR code
• anonymous instant messaging
• nobody can read or evaluate your data
• local files are stored encrypted on your mobile phone

The Threema application is constantly being improved.

--
PERMISSIONS
Threema requires the following permissions while installing the application. These permissions are only used if the corresponding functionality is requested.

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be futher extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

--
WHY IS THREEMA A PAID APP
Threema only requires a one-time fee. There are NO recurring charges. The price covers operating expenses and further development of the Threema platform.

--
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

--
Follow us on:
https://threema.ch/blog
Twitter.com/ThreemaApp

Threema is a mobile messaging app that puts security and privacy first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages. You can use Threema completely anonymously, without giving away personal information such as phone numbers or email addresses. Your messages will be deleted from our servers immediately after being delivered. Therefore, you're perfectly protected against data abuse.

--
SECURE END-TO-END ENCRYPTION
Compared to other popular messaging apps (including those claiming to use encryption), even we as the server operator have absolutely no way to read your messages.

--
HIGH LEVEL OF DATA PROTECTION
Threema takes data privacy very seriously. We strive to store only the absolutely necessary information for the shortest possible time. We guarantee that we do not collect, evaluate or sell customer data. That is our promise.

--
STANDARD FEATURES
Threema is not only secure but also very user friendly and covers the basic features of a mobile messenger.

• create Poll
• write text messages
• send videos and pictures
• share locations
• send voice messages
• create group chats and add new members
• synchronize your contacts (optional)

--
SPECIAL FEATURES
Threema differs from other mobile messenger by some special features.

• all text and voice messages as well as pictures, videos, and GPS locations are asymmetrically end-to-end encrypted
• even group chats are end-to-end encrypted
• verify the identity of a contact by scanning their personal QR code
• anonymous instant messaging
• nobody can read or evaluate your data
• local files are stored encrypted on your mobile phone

The Threema application is constantly being improved.

--
PERMISSIONS
Threema requires the following permissions while installing the application. These permissions are only used if the corresponding functionality is requested.

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be futher extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

--
WHY IS THREEMA A PAID APP
Threema only requires a one-time fee. There are NO recurring charges. The price covers operating expenses and further development of the Threema platform.

--
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

--
Follow us on:
https://threema.ch/blog
Twitter.com/ThreemaApp

Threema is a mobile messaging app that puts security and privacy first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages. You can use Threema completely anonymously, without giving away personal information such as phone numbers or email addresses. Your messages will be deleted from our servers immediately after being delivered. Therefore, you're perfectly protected against data abuse.

--
SECURE END-TO-END ENCRYPTION
Compared to other popular messaging apps (including those claiming to use encryption), even we as the server operator have absolutely no way to read your messages.

--
HIGH LEVEL OF DATA PROTECTION
Threema takes data privacy very seriously. We strive to store only the absolutely necessary information for the shortest possible time. We guarantee that we do not collect, evaluate or sell customer data. That is our promise.

--
STANDARD FEATURES
Threema is not only secure but also very user friendly and covers the basic features of a mobile messenger.

• create Poll
• write text messages
• send videos and pictures
• share locations
• send voice messages
• create group chats and add new members
• synchronize your contacts (optional)

--
SPECIAL FEATURES
Threema differs from other mobile messenger by some special features.

• all text and voice messages as well as pictures, videos, and GPS locations are asymmetrically end-to-end encrypted
• even group chats are end-to-end encrypted
• verify the identity of a contact by scanning their personal QR code
• anonymous instant messaging
• nobody can read or evaluate your data
• local files are stored encrypted on your mobile phone

The Threema application is constantly being improved.

--
PERMISSIONS
Threema requires the following permissions while installing the application. These permissions are only used if the corresponding functionality is requested.

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be futher extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

--
WHY IS THREEMA A PAID APP
Threema only requires a one-time fee. There are NO recurring charges. The price covers operating expenses and further development of the Threema platform.

--
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

--
Follow us on:
https://threema.ch/blog
Twitter.com/ThreemaApp

Threema is a mobile messaging app that puts security and privacy first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages. You can use Threema completely anonymously, without giving away personal information such as phone numbers or email addresses. Your messages will be deleted from our servers immediately after being delivered. Therefore, you're perfectly protected against data abuse.

--
SECURE END-TO-END ENCRYPTION
Compared to other popular messaging apps (including those claiming to use encryption), even we as the server operator have absolutely no way to read your messages.

--
HIGH LEVEL OF DATA PROTECTION
Threema takes data privacy very seriously. We strive to store only the absolutely necessary information for the shortest possible time. We guarantee that we do not collect, evaluate or sell customer data. That is our promise.

--
STANDARD FEATURES
Threema is not only secure but also very user friendly and covers the basic features of a mobile messenger.

• create Poll
• write text messages
• send videos and pictures
• share locations
• send voice messages
• create group chats and add new members
• synchronize your contacts (optional)

--
SPECIAL FEATURES
Threema differs from other mobile messenger by some special features.

• all text and voice messages as well as pictures, videos, and GPS locations are asymmetrically end-to-end encrypted
• even group chats are end-to-end encrypted
• verify the identity of a contact by scanning their personal QR code
• anonymous instant messaging
• nobody can read or evaluate your data
• local files are stored encrypted on your mobile phone

The Threema application is constantly being improved.

--
PERMISSIONS
Threema requires the following permissions while installing the application. These permissions are only used if the corresponding functionality is requested.

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be futher extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

--
WHY IS THREEMA A PAID APP
Threema only requires a one-time fee. There are NO recurring charges. The price covers operating expenses and further development of the Threema platform.

--
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

--
Follow us on:
https://threema.ch/blog
Twitter.com/ThreemaApp

Threema is a mobile messaging app that puts security and privacy first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages. You can use Threema completely anonymously, without giving away personal information such as phone numbers or email addresses. Your messages will be deleted from our servers immediately after being delivered. Therefore, you're perfectly protected against data abuse.

--
SECURE END-TO-END ENCRYPTION
Compared to other popular messaging apps (including those claiming to use encryption), even we as the server operator have absolutely no way to read your messages.

--
HIGH LEVEL OF DATA PROTECTION
Threema takes data privacy very seriously. We strive to store only the absolutely necessary information for the shortest possible time. We guarantee that we do not collect, evaluate or sell customer data. That is our promise.

--
STANDARD FEATURES
Threema is not only secure but also very user friendly and covers the basic features of a mobile messenger.

• write text messages
• send videos and pictures
• share locations
• send voice messages
• create group chats and add new members
• synchronize your contacts (optional)

--
SPECIAL FEATURES
Threema differs from other mobile messenger by some special features.

• all text and voice messages as well as pictures, videos, and GPS locations are asymmetrically end-to-end encrypted
• even group chats are end-to-end encrypted
• verify the identity of a contact by scanning their personal QR code
• anonymous instant messaging
• nobody can read or evaluate your data
• local files are stored encrypted on your mobile phone

The Threema application is constantly being improved.

--
PERMISSIONS
Threema requires the following permissions while installing the application. These permissions are only used if the corresponding functionality is requested.

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be futher extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

--
WHY IS THREEMA A PAID APP
Threema only requires a one-time fee. There are NO recurring charges. The price covers operating expenses and further development of the Threema platform.

--
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

--
Follow us on:
Twitter.com/ThreemaApp
Facebook.com/threemaapp

Threema is a mobile messaging app that puts security and privacy first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages. You can use Threema completely anonymously, without giving away personal information such as phone numbers or email addresses. Your messages will be deleted from our servers immediately after being delivered. Therefore, you're perfectly protected against data abuse.

--
SECURE END-TO-END ENCRYPTION
Compared to other popular messaging apps (including those claiming to use encryption), even we as the server operator have absolutely no way to read your messages.

--
HIGH LEVEL OF DATA PROTECTION
Threema takes data privacy very seriously. We strive to store only the absolutely necessary information for the shortest possible time. We guarantee that we do not collect, evaluate or sell customer data. That is our promise.

--
STANDARD FEATURES
Threema is not only secure but also very user friendly and covers the basic features of a mobile messenger.

• write text messages
• send videos and pictures
• share locations
• send voice messages
• create group chats and add new members
• synchronize your contacts (optional)

--
SPECIAL FEATURES
Threema differs from other mobile messenger by some special features.

• all text and voice messages as well as pictures, videos, and GPS locations are asymmetrically end-to-end encrypted
• even group chats are end-to-end encrypted
• verify the identity of a contact by scanning their personal QR code
• anonymous instant messaging
• nobody can read or evaluate your data
• local files are stored encrypted on your mobile phone

The Threema application is constantly being improved.

--
PERMISSIONS
Threema requires the following permissions while installing the application. These permissions are only used if the corresponding functionality is requested.

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be futher extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

--
WHY IS THREEMA A PAID APP
Threema only requires a one-time fee. There are NO recurring charges. The price covers operating expenses and further development of the Threema platform.

--
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

--
Follow us on:
Twitter.com/ThreemaApp
Facebook.com/threemaapp

Threema is a mobile messaging app that puts security and privacy first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages. You can use Threema completely anonymously, without giving away personal information such as phone numbers or email addresses. Your messages will be deleted from our servers immediately after being delivered. Therefore, you're perfectly protected against data abuse.

--
SECURE END-TO-END ENCRYPTION
Compared to other popular messaging apps (including those claiming to use encryption), even we as the server operator have absolutely no way to read your messages.

--
HIGH LEVEL OF DATA PROTECTION
Threema takes data privacy very seriously. We strive to store only the absolutely necessary information for the shortest possible time. We guarantee that we do not collect, evaluate or sell customer data. That is our promise.

--
STANDARD FEATURES
Threema is not only secure but also very user friendly and covers the basic features of a mobile messenger.

• write text messages
• send videos and pictures
• share locations
• send voice messages
• create group chats and add new members
• synchronize your contacts (optional)

--
SPECIAL FEATURES
Threema differs from other mobile messenger by some special features.

• all text and voice messages as well as pictures, videos, and GPS locations are asymmetrically end-to-end encrypted
• even group chats are end-to-end encrypted
• verify the identity of a contact by scanning their personal QR code
• anonymous instant messaging
• nobody can read or evaluate your data
• local files are stored encrypted on your mobile phone

The Threema application is constantly being improved.

--
PERMISSIONS
Threema requires the following permissions while installing the application. These permissions are only used if the corresponding functionality is requested.

• Read your contacts / modify your contacts: used for address book synchronization. When the synchronization is turned off, your contact data is not read or modified.
• Receive text messages: used for automatically linking your Threema ID to a mobile phone number. This permission is used only during the initial verification process.
• Precise location (GPS and network based): used for "send location" feature.
• Add or remove accounts, find accounts, create accounts: required for contact synchronization and integration in Android's account management.
• Modify or delete the contents of your USB storage: required for storing media files (images, videos, audio).
• Read phone status and identity: pre-fills your phone number if linking is desired. Only used during initial setup.
• Threema's functionality can be futher extended by separately downloadable plugins which may require additional permissions (e.g. access to camera, microphone).

--
WHY IS THREEMA A PAID APP
Threema only requires a one-time fee. There are NO recurring charges. The price covers operating expenses and further development of the Threema platform.

--
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq.html

--
Follow us on:
Twitter.com/ThreemaApp
Facebook.com/threemaapp