The Good Chord Book

The Good Chord Book brings the Good Book instrument collection together in one app. Explore chords and scales for guitar, mandolin, ukulele, bass, banjo, and the full collection of folk and world instruments.

Choose built-in alternate tunings or create your own. Custom tunings support 3–8 strings or courses with an open note for each string. Add a drone string to any custom tuning.

Browse chord variations, explore scales across the fretboard, and use left-handed diagrams. Save custom tunings and return to your last selection.