A sequencer for Jazz Chord Practice

As I work to develop my "Jazz vocabulary", I wanted an electronic flashcard tool that would help me with ingraining jazz chord patterns at the piano.   Since I didn't find what I wanted, I wrote the app.

Here's what I came up with:   A Sequencer for Jazz Chord Practice

The app will present chords of your choice in random order or sequenced by intervals of your choice.   Have look.  Let me know what you think.