About & Pics

Description

A4tune is an extremely accurate tuner for guitars and violins. Professionals appreciate its precision, beginners quickly learn to tune instruments properly. The app is easy to use thanks to a combination of chromatic and strobe tuners on one screen, and provides the most accurate tuning you can achieve.

The chromatic and strobe tuners are independent, but both use the same input from the built-in microphone of your phone or tablet for their advanced algorithms.

Chromatic tuner

The chromatic tuner precisely detects of the frequency of the tone played on your guitar or violin, and shows it on the chromatic scale. The target strings are highlighted on the scale, and you can see how far is the tone from being in tune. When you get close enough, you can use the strobe tuner for fine tuning.

Strobe tuner

After you have used the chromatic tuner to get close enough to the target frequency, you can start looking at the strobe tuner. When the pattern is moving to the right, it means the tone is too high, and you need to tune down. When it is moving to the left, just tune up. The slower the pattern moves, the better is your instrument tuned.

If you are in doubt how to use the tuner, please read the built-in help, and see the examples of the tuning process there.

The strobe tuner uses an independent algorithm from the chromatic tuner. While the chromatic tuner uses the Fast Fourier Transformation, the algorithm in the strobe tuner is much closer to what you can find in oscilloscopes, and is computed directly on the GPU of your phone / tablet.

Tuning by ear

You can also play the reference tones using the "Play Tone" buttons at the bottom of the screen. The tone is synthesized, and respects the setting of the concert pitch.

Guitar

The tuner has been tested with many guitars and violins, and we constantly grow our test coverage with new recordings of the instruments. You can switch between the guitar and violin tuning in the settings.

Violin

The strobe view allows you to tune as precisely as the professional violinists tune by ear. The chromatic view helps the novice players to improve their accuracy when exercising.

Other instruments

The chromatic tuner can be used with other instruments too, but you will have to ignore the strobe view. We also limit the range of the frequencies to what is usual on a guitar or on a violin. We will add more instruments later, when we grow our test suite with their recordings.

Features:

* Guitar tuner beginner & pro
* Violin precision tuner
* Advanced noise cancellation - works even with a metronome on
* The most favorite alternate guitar tunings
* Easy to use for violin and guitar beginners
* Precision tuner suitable for professionals
* Plays reference tones
* First-start tutorial to understand the usage
* Built-in help to understand the app better
* Two independent tuning algorithms: chromatic tuner using the fourier transformation and strobe tuner emulating the stroboscopic effect
* Quick, precise, and accurate tuner
* Free, Ad-free
* Possibility to donate for further development
* Concert pitch frequency setting
* Note naming: English, European, Solmization
* Equal temperament
* Quick access to settings to switch between violin and guitar tuning
* Send feedback: Record the string, e-mail it directly from the application, and we will add it to our built-in tests.
* Tested with many instruments, and test guitar / violin recordings are in a test suite that is regularly run before every release.

A4tune is ideal for all violins and guitars, and you'll really enjoy the sound of your instrument, and the music you play!

 Free in Google Play

Screenshots

Guitar and Violin Tuner screenshot 1Guitar and Violin Tuner screenshot 2Guitar and Violin Tuner screenshot 3Guitar and Violin Tuner screenshot 4Guitar and Violin Tuner screenshot 5Guitar and Violin Tuner screenshot 6Guitar and Violin Tuner screenshot 7Guitar and Violin Tuner screenshot 8

Version History

Launched Aug 09, 2016 (over 2 years ago).

Releasing new versions every about 1 month, on average.

Nov 01
2018
(Current)
Version 3.5.0

* New instruments: Viola, cello.
* Fixed rendering of the Strobe on some devices.

Oct 17
2018
Version 3.4.7

* Added new instruments: Ukulele and bass.
* Added new tuning: 7-string guitar.

Aug 05
2018
Version 3.4.6

* Added new instruments: Ukulele and bass.
* Added new tuning: 7-string guitar.

Jul 14
2018
Version 3.4.4

* Added new instruments: Ukulele and bass.
* Added new tuning: 7-string guitar.

Jul 12
2018
Version 3.4.3

* Noise cancellation improvements.
* Added new instruments: Ukulele and bass.
* Added new tuning: 7-string guitar.

Jun 28
2018
Version 3.4.2

* Added new instruments: Ukulele and bass.
* Added new tuning: 7-string guitar.
* Various smaller fixes and improvements.

May 19
2018
Version 3.4.1

* Added new instruments: Ukulele and bass.
* Added new tuning: 7-string guitar.
* Various smaller fixes and improvements.

Apr 19
2018
Version 3.4.0

* Added new instruments: Ukulele and bass.
* Added new tuning: 7-string guitar.
* Various smaller fixes and improvements.

Apr 06
2018
Version 3.3.2

* Reworked Strobe to be faster and more fluent.
* Two times faster indication of the frequency.
* Various smaller fixes and improvements.

Mar 24
2018
Version 3.3.1

* Reworked Strobe to be faster and more fluent.
* Two times faster indication of the frequency.
* Various smaller fixes and improvements.

Feb 15
2018
Version 3.2.0

* Reworked Strobe to be faster and more fluent.
* Two times faster indication of the frequency.
* Fixed crashes on Android 5.0.

Jan 25
2018
Version 3.1.1

* Further improvements of noise cancellation.
* Improved accuracy of detection of lower frequencies.
* New navigation drawer instead of context menu.
* Various smaller cleanups and fixes.

Jan 18
2018
Version 3.1.0

* Further improvements of noise cancellation.
* Improved accuracy of detection of lower frequencies.
* New navigation drawer instead of context menu.
* Various smaller cleanups and fixes.

Dec 28
2017
Version 3.0.3

* Possibility to upgrade to Professional version.
* User interface update.
* New automatic tests.

Nov 30
2017
Version 3.0.2

* Possibility to upgrade to Professional version.
* User interface update.
* New automatic tests.

Nov 10
2017
Version 3.0.1

* Possibility to upgrade to Professional version.
* User interface update.
* New automatic tests.

Aug 01
2017
Version 2.3.3

Added favorite alternate tunings.

Jul 26
2017
Version 2.3.2

2.3.2: Added alternate tunings.
2.3.1: Minor improvements.
2.3.0:
* Implemented noise cancellation.
* Improved tutorial and help.
* Updated fundamental frequency detection.

Jun 26
2017
Version 2.3.1

2.3.1: Minor improvements.
2.3.0:
* Implemented noise cancellation.
* Improved tutorial and help.
* Updated fundamental frequency detection.

Jun 15
2017
Version 2.3.0

2.3.0:
* Implemented noise cancellation.
* Improved tutorial and help.
* Updated fundamental frequency detection.

May 12
2017
Version 2.2.3

2.2.3: More understandable tutorial.
2.2.2: Even better pitch (fundamental frequency) detection.
2.2.1: Improved help.
2.2.0: New major release.
* Better indicator, now shows the detected frequency.
* The landscape mode was completely reworked.

May 04
2017
Version 2.2.2

2.2.2
* Even better fundamental frequency detection.
2.2.1
* Improved help.
2.2.0
* Indicator showing the detected frequency.
* Improved landscape mode.

Sep 19
2016
Version 1.1.1

* Further improvements of the pitch detection.

Sep 05
2016
Version 1.1.0

* Considerably improve detection of the octave.

Aug 24
2016
Version 1.0.4

* Various improvements of the chromatic indicator.

Aug 22
2016
Version 1.0.3

* Choose between tuning guitar and violin on the first start.

Aug 09
2016
Version 1.0.2

Minor bugfix release:
* Request the Microphone permission on Android 6.

Previous 3 versions
200

Total Ratings

5
170
4
16
3
2
2
4
1
8
1.2K

Total Ratings

5
950
4
130
3
34
2
13
1
47