great for the very young (less than 2.5 yrs old)
My 2yr 9month old really enjoyed this but it was much too easy for her. She got eveything correct the entire time she was playing and didnt need to think about it. I cant imagine a 4yr old finding it challenging. There needs to be a wider variety of shapes and more shapes per page. That being said, the game is well designed and easy for young children to play without assistance. She really enjoyed collecting all the stickers. It kept her attention for a long time. We will try the alphabet and number apps to see if those are more challenging.
k9999991 about
Shapes Toddler Preschool, v3.2