About & Pics

Description

Petralex Hearing aid will automatically adjust to specific features of your hearing.
Use the power of your smartphone and latest technologies for maximum sound amplification.
No registration and no advertisements.
You only need a simple headset in order to use it.

Hundreds of thousands of people have chosen Petralex to solve their hearing problems.
The application was chosen as Microsoft Inspire P2P contest winner in 2017.

FEATURES:
-- Automatic adjustment to hearing specifics - FREE;
-- Hearing correction for each ear - FREE;
-- Adaptation to different types of environment - FREE;
-- Full acoustic amplification up to 30 dB with a wired headset - FREE;
-- Built-in hearing test - FREE;
-- Amplification of quiet sounds without losing the overall volume (dynamic compression) - FREE;
-- Using 4 options of sound amplification - FREE;
-- Using the built-in 4-week adaptive course for getting used to the hearing aid - FREE;
-- Support of Bluetooth headsets* - FREE.

PREMIUM SUBSCRIPTION OFFERS ADVANCED POSSIBILITIES:
-- Regulated noise suppression – eliminates background noise, increases speech intelligibility – TRIAL;
-- Modern Dectone amplification method which amplifies even better – TRIAL;
-- Profile editing – fine adjustment of hearing aid – TRIAL;
-- Audio recorder/Dictaphone with amplification and personalization of sound to your hearing – TRIAL.

How the Subscription Works:
- Subscribers get full access to ALL FUNCTIONS OF THE APPLICATION;
- All recurring subscriptions will auto-renew unless auto-renewal is turned off at least 24 hours before the end of the current period;
- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase;
- Your subscription is for your account and can be used on your device;
- Payments will be charged to your account at confirmation of purchase;
- Subscriptions cannot be cancelled during the active subscription period.

Choose from one of the following subscription options:
-- weekly subscription for $1.99 per week
-- monthly subscription for $6.49 per month
-- 6 months subscription for $49.99 per 6 months
-- annual subscription for $79.99 per year

IT TAKES TIME TO GET USED TO ANY HEARING AID! BE READY FOR:
-- Adaptation to any hearing aid takes from several weeks to several months;
-- You will hear sounds and noises that you have not heard before. Use the built-in noise reduction function;
-- Some familiar sounds can acquire with metallic aftersound, which can cause temporary discomfort;

USE THE BUILT-IN 4-WEEK ADAPTIVE COURSE FOR GETTING USED TO THE HEARING AID.


*Using Bluetooth
NOTE! Using Bluetooth headset brings additional delay to sound transmission.
Possible echoing can appear.

Disclaimer:
The Petralex® app is not approved as a medical device or software and cannot be used as a hearing aid with doctor`s prescription.
Audiometric test provided in the application can be used only for app adjustment. Testing results are not a substitute for professional audiology tests.

Have questions, feedback or suggestions? Reach out to us at support@petralex.pro

Read more about our terms and conditions here:
- Terms of service: http://petralex.pro/page/terms
- Privacy policy: http://petralex.pro/page/policy

 Free in Google Play

Screenshots

Petralex Hearing aid screenshot 1Petralex Hearing aid screenshot 2Petralex Hearing aid screenshot 3Petralex Hearing aid screenshot 4Petralex Hearing aid screenshot 5Petralex Hearing aid screenshot 6Petralex Hearing aid screenshot 7Petralex Hearing aid screenshot 8

Version History

Launched May 14, 2014 (over 4 years ago).

Releasing new versions every 3 months, on average.

Jan 11
2019
(Current)
Version 3.2.1

In the 3.2.1 we improved the app stability and fixed crashes.
Keep your feedback coming! Write us at info@petralex.pro and one of our friendly bunch will get back to you.

Dec 28
2018
Version 3.2.0

Lessons for adaptation course added
In the 3.2.0 we improved the app stability and fixed crashes.
Keep your feedback coming! Write us at info@petralex.pro and one of our friendly bunch will get back to you.

Dec 11
2018
Version 3.1.2

In the 3.1.2 we improved the app stability and fixed crashes.
Hearing test optimized.
Keep your feedback coming! Write us at info@petralex.pro and one of our friendly bunch will get back to you.

Nov 22
2018
Version 3.1.0

Built-in 4-week adaptation course for getting used to hearing aids added
In the 3.1.0 we improved the app stability and fixed crashes.

Oct 04
2018
Version 3.0.6

Sep 12
2018
Version 3.0.5

Aug 28
2018
Version 3.0.4

PREMIUM OPTIONS
-- extended hearing test
-- latest amplification formula
-- regulated noise suppression
-- editing lower hearing thresholds
-- audio recorder/dictaphone

Jun 04
2018
Version 2.2.3

fix bugs

May 24
2018
Version 2.2.2

Language support extended

Apr 27
2018
Version 2.2.0

Bugs in working with smartphone audio system repaired
Algorithm of audio signal improved
Module of acoustic feedback suppression updated
Language support extended

Sep 14
2017
Version 2.1.8

Bugs in working with smartphone audio system repaired
Algorithm of audio signal improved
Module of acoustic feedback suppression updated
Language support extended

May 04
2017
Version 2.1.2

Apr 14
2017
Version 2.1.0

Jul 26
2016
Version 1.3.0

The application is optimized for Android 6.
Option App Invite - now you can send your friends a message with a link to the application.
Added possibility to switch between the microphone of the Bluetooth headset and the
microphone of mobile device

Nov 25
2015
Version 1.2.0

In this update we have seriously worked on internal optimization of algorithms and audio processing. As a result audio latency was significantly reduced (it depends on a model of your device).
We have implemented suppression of AF Acoustic Feedback - loud squeal or screech from headphones appearing because of short distance between mic and speakers. It can be switched on in "Settings".
Also we fixed bugs and improved stability of the app.

Sep 24
2014
Version 1.1.0

Petralex® is a hearing aid application based on your Android phone or tablet device, running same principles as conventional wearable hearing aid. Auto-adjusting to your personalized hearing profile, completely invisible to anyone - use it with regular headset!

Using powerful hardware running Android 4.1 or higher with our patented algorithms and user-friendly interface with fast profile selection brings maximum sound quality and comfort of use.



Benefits of Petralex®:


- Easy to use - no special devices, no battery replacements or all-day wearing annoyance;
- Quick Setup for any sound environment;
- Increased sampling rate - 44.1 kHz, providing the best sound quality;
- Easy switching between device and headset microphones;
- Full acoustic gain up to 30 dB with a standard headset;
- Minimum signal processing delay - just 6,3-15,7 ms (depending on the model and software running simultaneously);
- Use the built-in mic to catch sound from distant sources, i.e. in classroom, at theatre (or use it as a spy-ear!);
- Easy profile sync for all of your Android powered devices with Dropbox cloud storage support;
- Setup and adjust the app without visiting a specialist;
- BT headset support (for processed sound playback only, sound is captured by device onboard mic).


You can compare the original and processed sound test phrases on our site www.petralex.pro.


Petralex® Hearing Aid is absolutely free to use because of your support. If you find the app useful, please support developers with donation at www.petralex.pro/donate


*Disclaimer:
The Petralex® app is not approved as a medical device or software and cannot be used as a hearing aid with doctor`s prescription.
Audiometric test provided in the application can be used only for app adjustment. Testing results are not a substitute for professional audiology tests and cannot be considered as a basis for diagnosis.


Keep in touch:
https://www.facebook.com/Petralex.EN
https://twitter.com/PetralexEN

Previous 3 versions
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Total Ratings

5
38
4
9
3
3
2
0
1
16
3.7K

Total Ratings

5
1.9K
4
730
3
360
2
220
1
480