Sprint has a new app offering exclusive deals and cash back rewards up to 20 percent. The company launched My Sprint Rewards today, available for both iOS and Android phones. The app lets Sprint customers access exclusive discounts at Sprint as well as other brands, enter for a chance to win prizes, and earn 3-20 percent cash back on select purchases. The program is similar to T-Mobile Tuesdays, but "can be used any time, day or night, to fit your schedule. New deals will be added regularly from a variety of different brands". Today the app is offering a free large one-topping pizza from Papa John's "while supplies last".