One of the two very best apps you can get

I came to this from PianoNotes Pro, and I highly recommend both together. Both work superbly with my MIDI keyboard (requires $30 Lightning/USB camera adapter from Apple); my piano sight reading has gone from agonizingly slow to fluent in really just a few months, 20 minutes/day. Both come with free iPhone versions. Differences: NT runs no timer, but only gives you one shot at hitting the right note(s); PNP does the opposite. NT is more structured and explanatory — it feels like more of a course; PNP keeps your high score like a video game, which I find wonderfully addictive (and has a guest setting too). NT teaches you the more complex chords when youre ready; PNP offers more personalization and now tests you on your scales. NT offers multiple-choice buttons too, for non-pianists; on the other hand PNP lets you slap the name of the notes on the onscreen keyboard if you choose. Between them these two apps have more than justified the price of my iPad and given me a full and effective education in piano-playing and sight reading. All my thanks to the creators.

Don Twain about Note Trainer Pro