Know Your Kneck · fretboard trainer for iPhone
There's only 12 notes.
CC♯DE♭EFF♯GA♭AB♭B
Learn where every one lives on the neck. Guitar, bass, ukulele or banjo, in any tuning and any key.
Free. No ads, no account, no tracking. Works offline.
Name it
See a fret, name the note
A spot lights up on the neck. Tap its name on a 12-note keyboard.
Find it
Read the staff, find the frets
A note appears on the staff with a real key signature. Tap every place it's played.
Study it
See every key and scale
Label the whole neck, or one key and scale, by note name or scale degree.
© 2026 There's Only 12 Notes