PandoraBox provides alternate App Store view on iPhone
PandoraBox [iTunes link] is like a free alternative iTunes App Store for iPhone apps. Probably its most remarkable feature is that it helps you find iPhone apps that are on sale, something that the iPhone's App Store oddly neglects to do.
It can tell you about apps that are temporarily free, or ones that have been discounted. It also contains tabs for Featured apps, New Apps, Favorites, and a More tab which takes you to a page that has Search and Settings tabs.
Favorites is useful if you want to keep an eye on an app and nab it if and when it goes on sale. For example, I'm not much of a football fan, but I'll watch Madden 2010 and if it drops to 1/2 price, I'll probably pick it up.
If you're an Android user, similar functionality can be found in an app called AndroidStats, which gives you "yesterday's price changes", and "biggest weekly movers" lists.
[via iPhone Atlas]