Google Opinion Rewards - Answer quick surveys and earn Google Play credits with Google Opinion Rewards.
Receipt Hog - A fun and rewarding way to turn everyday shopping receipts into cash.
CashPirate - Download CashPirate app for Android. ayeT-Studios' personalized beta-testing program that pays mobile phone users to download and install new apps. .
Fluz - REAL Cash Back - Amazon, Gas, Groceries, Cell Phone Bill and HUNDREDS More.
Dosh - Cash back, auto-magically
FreeMyApps - FreeMyApps lets you get rewarded for watching cool videos, playing fun games, and trying new apps.