I got this app like 2 years ago, i didnt have a piano so i used the apps.with that i had a good enough experience but now that i got a keyboard i downloaded the app and it is terrible!! I got started and after 1 hour i completed one stage and you have to pay to keep using the app.At first i understood but then I deleted it then reinstalled it so i could have another go without paying £10 a month but i was playing the correct notes but it kept saying they were wrong Hope this was a helpful review