Angelina Ballerina’s New Dance Teacher for iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (3rd generation), iPod touch (4th generation), iPod touch (5th generation) and iPad on the iTunes App Store.
I am personally not a huge fan, but my nieces loved Angelina Ballerina on PBS. There is an interactive e-book app and a bubble popping game for the iPad and iPhone that has gone free. Your little one can also play with the interactive coloring activities and puzzles in the e-book app.
Recommended for ages 2 to 5.