Tonic
See over 130 chords in AR 🎹
Tonic launched on August 31, 2018 with 125 votes, #234 of 2,619 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 8 years on.
What it does
Tonic is the world's first AR chord dictionary. View over 130 chords in AR on your own piano.
Download Tonic - AR Chord Dictionary by Coda Labs Incorporated on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Tonic - AR…
I just wrote a three star review saying that I was not able to get the highest key to align. After I submitted this review, I went back into the app and tried again and succeeded! My only issue now is that the dots are not centered on the keys correctly, which makes it difficult to play chords while looking at the screen, because I’m not sure what notes I should play. I tried realigning by standing at the center of the keyboard and pointing the camera at the highest and lowest keys, but that did not seem to help much either. As I said before, this app has a lot of potential. It just needs to have some minor bugs fixed. I just wrote a three star review saying that I was not able to get the…from apps.apple.com
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- APA piano chord reference tool2022 · pianochord.io · ▲206
A place to explore piano chords freely and interactively

See chords as flags – Visual harmony of top composers on musescoreNov 2025 · rawl.rocks · ▲129I designed a relative piano-roll-based music notation. I used 12 colored arranged in a specific way to make visible the main effects and oppositions of Western tonal harmony. The tonic is always white, so a manual annotation/interpretation is required for each MIDI file. All chords are flags of three to four colors. Minor mode is darker, major mode is lighter. Colors are arranged in thirds. I sorted the pieces from simple complex harmony. I also wrote a bit of text to explain what you may see. There's also a corpus of structures: hyperlinks of tags that allow you to find similar…


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