Just one tap and you have an A. Clear, quick and easy.

Tune up. Play. Enjoy!


• Clear, authentic sound which fades out, just like a real tuning fork.
• The frequency is variable in the range 435-445 Hz.
• Change the frequency by tapping the sharp or flat symbol.
• A black toolbar indicates the frequency is at the default. By sharpening or flattening, the toolbar turns gray. A new default can then be set by double-tapping the number, whereas a single tap restores the fork to the default.
• Swipe left to access settings
• VoiceOver support

What's New

Version 2.1

• Added support for App rating changes in iOS 10.3
• Settings can now be opened by swiping left on the fork.

If A-440 works for you, we would appreciate an App Store review. Your review will help others find A-440 and keep in tune.

Ratings and Reviews

4.4 out of 5

73 Ratings

73 Ratings

Don't annoy me if I paid for your software

Unreal Yorik

I paid money for the app. In return I'm harassed repeatedly to give a review. If you want one here you go.

It’s bad

the critic of things

It doesn’t work and needs to get a life

Indeed the best plain and simple tuning fork but->

Shimmy Weitzhandler

it causes the music player to stop, sometimes I'm using the work to determine a key of the currently playing song/chord.

Would be great to have it advanced so that it doesn't stop the music.

Thanks anyway.


Paul Richardson
14.6 MB
Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.
English, German
Age Rating
Rated 4+
© 2017 Paul Richardson


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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