Pocket Potions Jailbreak hack for gems?

I'm looking for a hack to get more gems on Pocket Potions. What I got from google just seemed a bit difficult and I didn't understand it (somehing called ifunbox?) well I have iApp Cracker but it doesn't work with Pocket Potions… I'm using a jailbroken iPhone 3GS has anyone used a hack with this device? Can you give me details on how to do it?

Check this out, no install, no download, just a very good way to help yourself out in the game: D like speeding up potions etc
http://www.linkz.it/Us