X Piano app for iPhone and iPad

X Piano is for piano lovers of all levels.
You can have up to seven octaves on one screen and play multiple scales at once. Authentic audio samples, minimum latency, built-in metronome and recording system ...... everything needed to create your original music.
It also offers a great selection of more than 200 piano pieces for replay or practice. You are guided through the masterpieces to learn to play as natural as in a game. Play your favorite hits right on the rhyme - even if you dont know how to read a music score!

Usually X Piano iOS app used & searched for