My Piano Assistant is an app geared mainly towards users who are studying piano. It lets you continue perfecting your technique anywhere. Basically, this is a virtual book with chords, scales, and intervals.
It's very important to keep in mind that My Piano Assistant isn't a virtual piano app nor anything of the sort. This means it doesn't let you play the piano on your device's screen. At best, you can listen to the result of a composition you've written without actually playing anything. Because of this, again, this app is geared mainly towards users who study piano.
My Piano Assistant includes a clear, accessible interface that will surely only interest serious piano students. This app is not recommended for people who want to start learning to play the piano from scratch.