Note Squish This is a cute drill and practice app for note names. The cost is $0.99 for iphone (but it can be enlarged for iPad). It's kind of like Whack-a-Mole. You can choose the clef (treble, bass, C-Clef), range of notes used, speed, and letters or solfege. The object is to whack the mole with the correct note name on it. You can whack the other animals that appear for bonus points.