This is a good ap, and worth the money($0.99). I really wish they had thought through a couple things: like others said, they should repeat the instructions if you make a mistake; on the duck level, it talks about the ducks climbing UP to make the correct number. But when you press the correct number instead of the duck or ducks climbing up to show the correct amount, the duck slides down and they all disappear, so the child never sees the correct amount. Same with the apples: the child guesses the correct number to fall off the tree, but the app doesnt show the apples falling to show the child the correct amount on the tree. Please consider fixing these small things! With these fixes it would certainly be a five star app.