A-Tuner

nobapp

About this app

A-Tuner is a full-featured, ad-free chromatic tuner for a wide range of instruments, from strings to winds. Its uncluttered display lets you focus on tuning and practice.

Play a note and your device's microphone picks it up. A rotating indicator and bar show whether the pitch is sharp or flat, while the note name, octave, frequency, and pitch deviation appear at a glance. Pitch deviation is displayed in 0.1-cent increments, helping you make fine adjustments with confidence.

The built-in tone generator can play the note of your choice, and the metronome is ready for everyday practice. You can also adjust the concert pitch, input sensitivity, in-tune tolerance, and display theme to suit your instrument and playing environment.

Key features:
• Pitch deviation displayed in 0.1-cent increments
• Clear visual guidance with a rotating indicator and bar
• Note name, octave, and frequency display
• Adjustable concert pitch
• Automatic or manual input sensitivity
• Transposition
• Automatic or manual note selection
• English, German, Dutch, French, and Italian note naming systems
• Octave stretch tuning for keyboard instruments
• Light and dark display themes
• Selectable reference tones
• Metronome

14 historical temperaments:
• Pythagorean
• Quarter-comma meantone
• Just intonation (major and minor)
• Werckmeister III, IV, and V
• Young I and II
• Kirnberger I, II, and III
• Vallotti
• Kellner

Use standard equal temperament or explore historical temperaments to find the sound that best suits your instrument and music.

Ratings and reviews

I've used some version of this app on my desktop, laptops, tablet, and phone. The pay version is worth the price because of the features. I like this because it's simpler to choose the note you want. I am a bassist. I also play guitar, violin, and banjo. This will work with all of them! You should remember that it's not plugged in so you need a quiet place. I use an electronic tuner on stage so I can plug in. I don't think this has option to plug in. Hint!

This is an excellent tuner. The display is clear, accurate and easy to read. I have used many tuners over my 50 years of playing and performing. I use it for tuning a wire strung harp. The adjustments of the "in tune" range to .5 cents that is available in the paid version are very useful. I also appreciate that the display changes color when a string is within the range. I will definitely recommend it to other musicians

Been using this app for years now and it can't be beat. Can't say I've had any reason to try any other tuner. Been playing for 30 years, own several hardware tuners from clip ons to pedals, all reputable brand names (korg, Peterson, TC, etc) and I use this for all of my guitar setups. Such a well-designed and excellent-performing tool.

What’s new

v2.8.1
* Fixed incorrect intervals in the Pythagorean temperament.
v2.8.0
* Android 16 is now supported.
* Android 6.x is no longer supported.
* Improved stability when switching between apps.
v2.7.0
* Android 15 is now supported.
* Android 5.x is no longer supported.
v2.6.0
* Android 14 is now supported.
* Android 4.x is no longer supported.
v2.5.1
* Fixed an issue where notes above the configured pitch range were detected.
* Improved accuracy with some instruments.