A deliberate practice app for guitar players who want to level up

This is awesome! I made a very similar tool to help myself practice progressions specifically for banjo: https://banjo-rolls-deluxe.twait.dev/

Far fewer features than your app, but just having a tool to help nail down the muscle memory of pre-built progressions has been massively helpful for me as a banjo-player-in-training.

Your exercise builder is awesome and something I was planning on building into my site, might take some inspo!