Wonderfully and generously done. I only wish more concepts are added regularly.
How about having concepts graded from very basic (sad, happy, etc.) to more mature ones (cynic, stoic, seductive, etc. ) down the list.
All said, this app is a gem. And I wish the creators know they have done a superb job that just needs continued care and expansion.
Arash Kamangir about Kids Learning - Photo Touch Concepts, v3.0