I love ur app and still wanting to upgrade

But Im not sure how this works would I have to pay every month or one time cause I can do a one time fee in a New York minute and lets say I do upgrade what do I get with the upgraded pro version? How much? What all do I get? And this may be too difficult for me cause I have no credit cards. Bad credit sadly:( I do love this app so much you can do with it. And I started out not liking it at all. After using it many times I dont know if I could do without it. Makes my iPod look so neat and I mean neatly organized ok ok and neat as in neato hahaha lovin it!!

Ur sweet Mansikka about DIY Themes - Custom Backgrounds,Themes and Wallpapers For iOS 7