Free Piano is the best sounding and most realistic piano app for iPhone, iPod Touch and iPad. It's a fun musical instrument that you can take with you anywhere.
11 great patches (3 are free):
With Free Piano you can play individual notes, melodies or chords. Join with a group of friends to create the ultimate Piano group. Play chords with all the fingers you've got. Slide your fingers to roll the keys. Endless hours of pure fun.