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Life & fun · June 21, 2021

To learn Music Theory, I built a Chord Detector App

To learn Music Theory, I built a Chord Detector App launched on June 21, 2021 with 6 votes, #1,472 of 3,650 launches that month and more than 50% of that year's launches. The site was not reachable when checked in September 2026.

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    Hello HN, I just released this music theory and ear training mobile app for guitar which I've been working on for a bit more than a year on the side. The idea was to make something for the eternally "intermediate" guitarist (myself included). There are a lot of beginner apps which rely on learning songs, toolkits which give you a bunch of stuff with no explanation but not many in-between apps to actually learn and practice more generic and somewhat advanced stuff. The app contains short lessons, recaps and most importantly challenges (visual, audio and pure theory) along with a very complete…

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