Had this game in my sites for a while. I noticed they had an ad supported version for free so I grabbed it to get a feel for the game before buying it. The free version though does not work on my iPhone (4s, 6.1.3). At the game start it plays much of the intro then locks up on the screen where it says "I'll help you!". Also on the character selection screen if I hi the Game Center button it brings up GC as expected but returning to the game is a blank screen with no way to do anything.
I was considering buying this even though its not a Metroidvania but more of a Slow Sonic (Sonic games have a lot of optional exploration).
Any chance this is going to get fixed? This was updated July 24, 2014... So it seems like someone is trying to make it work. Turning airplane mode on makes no difference either, the ad supported free version is just completely broken.