You really have to sift through a lot of Chinese garbage in the app store to find good stuff sometimes. So many "vendors" (loosely used) push out the same app under different names and different price points and graphics just to scam as many people as they can. Then there's just the stupid junk like this that is just throwing poo at the wall to see who'll buy it. The app store is like a giant trip to an asian bazar. As controlled as it appears to be, they sure let quite a bit of useless fluff get by.
It's because Apple is primarily interested in the control over their customers and not so much the "vendors".