The most simple and useful piano app on App Store. To play piano keyboard easier to learn happy songs. Beautifully skin makes more relax. To play sound everywhere and anytime.
3.5-inch screen of iPhone4 and iPhone4s.
4-inch screen of iPhone5 and iPhone5s.
4.7-inch screen of iPhone6.
5.5-inch screen of iPhone6 plus.
all iPads and iPad retina.