This is really a great game, but you do have a few bugs. Your in-app purchase button (the one that says "no ads") doesn't work. It turns when I touch it occasionally, but never took me to a purchase pop-up. I see it's only .99, but it should come up IN-APP. Also, when I completed the levels 1 & 2 a pop-up said "You have completed the level, go back and choose another world." Both times, at that point, I pushed the "ok" button and nothing happened and there was no way out of that screen. I had to hard reset my iPad to start the next world. Again, I recommend this game! Fix these 2 errors and you'll get 5 stars.
AB