Is there an iPhone 4 compatible Cydia app that will rotate through wallpapers at a preset interval? I believe that I used to use BossPaper to do this but I think I read that BossPaper doesn't work on the iPhone 4. This seems like a very simple thing to do and I don't need whizbang capabilities like video, slick transitions, etc. I just need it to rotate through a set of different wallpapers so that I'm not always looking at the same thing behind my springboard. Thanks!