As a music student, I use this app every day. I dont even know how I practiced without it! Its like practicing with a rhythm section in your ear. Its very similar to Band in a Box, but it has more options for chords, its quicker and easier to create new charts and you can even change time signatures in the middle of a chart! Just a fantastic app! The only thing that I wish is that it use the full screen on iPhone 5. Then it would be pretty much perfect.