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.
Swagbucks - Swagbucks is a loyalty program that offers individuals rewards for engaging in various activities. Users can earn reward points for performing Internet searches, purchasing items from affiliated vendors, or completing polls.
FreeMyApps - FreeMyApps lets you get rewarded for watching cool videos, playing fun games, and trying new apps.
Survey Junkie - Survey Junkie is an online community with over 10 million members dedicated to making your voice heard.
Verydice - Verydice is a casual application where you can roll the dice to win tickets and free real stuff without any effort.