fret lab

a fretboard trainer that listens. scale shapes and arpeggios, chord voicings from open shapes to shells and drop-2s, triads across every string set, playing over changes, diatonic and borrowed harmony, fingerpicking patterns, interval and degree recall, ear training, note hunting, and a live map of the whole neck.

audio is analysed locally in the browser. nothing is recorded or sent anywhere. plug in or use the room mic — a clean, single-note tone reads best.