I'm a single dev making simple mobile games. I was looking at corona sdk for my next project. I don't understand what the difference between the paid version and the free version is. It seems that the whole SDK is free, so what does the paid version give you that the free version doesnt? I've been reading through the site, but I'm not quite getting it.
I will need to interface with apple's game center etc.. is that not accessible to me without paying?