There should be more apps that are really made for children.
Unfortunately, there is a lot of bad reviews for the purchase price of 2.69 EUR for the full version. I think it's good that you can try for free the app first. And whom 2.69 EUR are too much, the should think about how such an app is created. I can not imagine that these people put all their free labor available to me.
And even if repeatedly claims to the contrary, in the description is that it is a light version.
Quote: "This game requires Android 2.3.3 or later This light version of the app is limited in time (15 minutes) Then you can upgrade to the full version..."