Compare Bookings
Itunes App Store
Not only does this app help you compare hotels and vacation deals from all major sites, but it also offers decent promotions and discounts on other things, This includes car rentals, cruises, and other various expenses you may come across while on vacation.
Mxiit says
Rally have to checkout GasBuddy. Took Lots of time to read, but its worth it
Moss9ja