Nice! I was shooting for something that works better on a phone, but I really like how you tie chords to the scale. I'd like to do something like that, too, but in bluegrass, out-of-key chords like II and bVII are really important, too, and not sure how to make that work.

I also decided to show all the chord notes across the fretboard, rather than specific playable chord shapes. Both approaches are useful for different goals, but I wanted something that's more about leaning the fretboard than individual chords.