With the app it good for 10 15 minutes. In the ad it shows things that you have to pay for but there it's completely free. At the end of the first song certificate NOPE unlock library of songs NOPE. And it evan tells you add your name,card number,where you live.Oh hey when will I get my money back? "Oh we might give them back but we are not sure." I mean if you do that then they are getting a hole on ultra shopping spree And there is better piano apps. Also the prices are way to high in the app