It's my fault- I read the (few) reviews but decided to buy this app anyway, thinking it might be a good puzzle for my four year old, who already plays with a few of iTouch apps and loves 'em. Was disappointed to see that even the "easy" level has way to many tiny pieces, which are hard to move or see whether they've moved at all, adult or toddler alike. The idea behind this app is actually good, but On-Core folks, I suggest trying another version.