Google Opinion Rewards - Answer quick surveys and earn Google Play credits with Google Opinion Rewards.
Slidejoy - Rent your lockscreen to Slidejoy for cash and gift cards. Enjoy hot deals, trending news and app notifications right on your lockscreen
CashPirate - Download CashPirate app for Android. ayeT-Studios' personalized beta-testing program that pays mobile phone users to download and install new apps. .
S'more - A desktop app for writing Medium stories
Receipt Hog - A fun and rewarding way to turn everyday shopping receipts into cash.
FreeMyApps - FreeMyApps lets you get rewarded for watching cool videos, playing fun games, and trying new apps.