Teal dots are the root. Learn one box first: pick a root near fret 3 or 5 on your lowest string and play every dot within four frets of it.
Progress is saved on this device.
Instrument sounds: FluidR3 GM soundfont by Frank Wen, CC BY 3.0.
Ear
Hear it, name it. Sing each note before you tap. Once you know the key, a degree number tells you the note name.
Voice log (for troubleshooting)
Tap New note. You'll hear the key, then a note.
Fretboard
A dot lights up and sounds. Tap its name. Fast, not careful.
Jam
Loop a progression and improvise over it. Turn the bass off and play that part yourself.
Letters (G D Em C) or numbers (I V vi IV). Write a chord twice to hold it two bars. Start with 3/4 for a waltz.
Songs
Take each song through five stages, in order. Today's song work always points at the first unchecked stage.