inHarmony is an app focused on simplifying music composition by taking much of the guesswork out of musical theory. It’s designed to be a MIDI keyboard that allows you to work with your DAW. Once your MID setup is complete, you can choose from any diatonic scale and the app will appropriate the chords in that scale for you. You can then trigger these chords by touch – selecting from 2, 3, and 4 note chords.
It could easily be considered an educational tool as well. People less adept to music theory will start to learn scales and common chord progressions that go well together.
Not every music producer is a keyboard virtuoso either. With inHarmony you can trigger an entire chord with one touch, which makes playing complex chord progressions much easier as well.
The MIDI setup takes a bit of work, but for $2 this is a cool app that many music producers could benefit from.