Tonic is the world's first AR chord dictionary.

Chords are amazing. But for musicians who aren't jazz aficionados, finding a chord from a lead sheet is often frustrating and time consuming. And for the many talented musicians who don't read sheet music, chord dictionaries with music notation don't make things any easier.

Tonic is the solution. Using AR, Tonic lets you easily view over 130 chords on your own piano. It tells you exactly where to place your fingers to play almost any chord. Great for students, professionals, or anyone interested in music.


- Over 130 chords with music notation
- Flat/sharp display modes
- Works with 88, 76, 61, and 49 key pianos
- 3 octaves to choose from
- An adorable app icon

What's New

Version 1.11

- Improved piano key tracking accuracy

Ratings and Reviews

3.8 out of 5
81 Ratings
81 Ratings

Brilliant idea and brilliant execution


So well done!

Cool idea. Doesn’t work on my keyboard


This is a really cool idea. Sadly it doesn’t align to my keyboard. I suspect it expects a full 88 key piano, but mine only has 61, so it doesn’t align correctly. Hopefully the developer can add an option for this.

Developer Response

Hi j999,

The latest version of Tonic should work with your keyboard. Try it out!

If this works for you, would you mind revising your review?


Dots didn’t line up


The dots were scrunched together and didn’t line up with the keys

Developer Response

Hi Enertron,

Thanks for letting me know! The latest version of Tonic should fix this issue.

If this works for you, would you mind revising your review?



Daniel Kuntz
11.4 MB
Requires iOS 11.0 or later. Compatible with iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, iPad (6th generation), and iPad Wi-Fi + Cellular (6th generation).
Age Rating
Rated 4+
© 2018 Daniel Kuntz


  • Family Sharing

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

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