Here are some of the android apps that my kid uses(plays)
Ant smasher
Barney the Dinosaur
Dora puzzle
Kids coloring
Kids Animals (there is a bunch of stuff in this series. I don't remember all the names, as I deleted them due to lack of space. There were a few for alphabets, numbers, animals etc)
Moron test (my son's fav)
snow white puzzle
Memory