ChordOrbit

ChordOrbit is a music theory practice app for musicians, students, worship teams, and songwriters. It helps you explore chords, scales, modes, family chords, substitutions, progressions, the circle of fifths, piano voicings, guitar positions, standard notation, tuner, metronome, and MIDI keyboard input in one clean app.

You can hear chords, view them on piano or guitar, build and reorder chord progressions, read notes on the staff, connect a MIDI keyboard, and practice with real-time visual feedback. It also works as an installable PWA, so you can use it on mobile or desktop.