To find Lost Chords, enter the notes, up to 6, of a chord to see every way to play the chord on the fretboard. This app has 2 note marking modes: 1) "Same Note Name" 2) Same Name & Pitch. Tap the fretboard on a fret and string and depending on the selected note marking mode above, notes are marked on the fretboard in a color. Tapping another fret and string will mark notes, associated with this fret and string, on the fretboard in a new color, and so on, to show you color-coded notes on the fretboard showing different ways to play chords. To change note marking mode, tap the note marking mode text at the bottom of the fretboard. Tap the "X" at the upper left of the screen, to close the app.