This is going to be a great app for some of my more advanced private students who I’m wanting to work on music theory with. Right now, I have only a few small issues with it that I’d like to see improved in future versions:
The melodic minor only shows the way up, and not down. Being an amateur programmer, I can see that this would be a difficult feature to add in, though.
I’d love to have key signatures showing as well, with naturals or other accidentals showing for minor keys and keys that you might expect them, such as octatonic.
The ability to hear the scales and chords would be an excellent feature to incorporate in the future as well, although I know that feature would be a lot more work.
For what this app does at the present, definitely 5 stars: really helpful as a teaching aid.