Applies wherever a note is simply named. Where the spelling is fixed by the music — the chords of a key, the notes of a triad — it stays as written.
The default already covers deuteranopia and protanopia; blue–yellow covers tritanopia, and high contrast drops colour altogether. Every dot is labelled and roots are filled, so the board never relies on colour alone.
Fret number, 1 to 24. Leave it empty for no capo. Notes behind the capo are hidden, since you can’t play them.
Tap any note on a fretboard to hear it.
Fretboard drills and theory for guitarists.
Install it like an app — it opens full screen and every tool keeps working with no internet.
Installed — this app is on your home screen and ready to use offline.
Send them the link. It is free, there is nothing to sign up for, and it works on their phone in the practice room with no signal.
Drills that score you and show what you missed.
Works offline once you’ve opened it. No account, no tracking.