Pretty good, but desperately needs multitouch support. For example, if my baby has part of his palm or his opposite hand touching the screen and tries to swipe something, nothing will happen because its already detecting screen input from his palm/other hand thats resting on the screen. Fix this and the app would be amazing! As it stands now, it may just be confusing for little ones as to why it only sometimes works.
Ninjase about Magic Coloring Picture Book