johndpope / Harmonix

Harmonix is an iPad app for piano chords in songs or progressions, and tonality/harmonics in general. The user builds progressions in the Progressions Builder or by striking chords at an external midi keyboard or the onscreen keyboard. The app shows each chord's key, function, notation, scale and voicing. Its Core Data Engine works both ways, interpreting chords and generating (properly voiced) progressions.