Not only is this a useful app, but there's also an interesting backstory. The person who got the idea, Shayne Faerber, is a waiter. An iPhone development company picked up the idea, and now Shayne is dreaming of riches. Mall Maps ($2.99) contains over 1,000 malls in the U.S. and uses your iPhone's GPS to find the malls nearest you. Or you can browse by city/state or Zip Code. Once you identify a mall that you want to go to, the app gives you store listings and actual floor plans. Plus, the app gives you Google Maps directions to the mall location. Seems like just the app for this shopping season.