There’s nothing too unusual about this, but it’s a decent platformer. There are quite a few levels in this game, I believe about 100 of them. There are no bosses, at least none so far that I’ve encountered. One thing that would at least make it easier to get further is to allow more than 9 extra lives. Otherwise, I would say give it a try, although you might find some other very similar games on the App Store.
By the way, there are a couple of bugs that I’ve noticed. One is that, for no apparent reason, the character starts moving very fast. So you have to be extra careful that it doesn’t kill you. Another is that somewhere (I will maybe get back to this review to post the exact level) there is a row of blocks that will not disappear after you headbutt them, but you do get the items contained in them.