This app is a good way to make a little bit of money here and there if you don't mind that the app repeatedly breaks and the support is barely interested in resolving your issue. You can spend cash completing offers or purchase their Sentinel NFC card and still be disregarded. I've had countless surveys screen me out 80% of the way or crash loading the menu making you to lose the reward. Support will barely care, disregard you and say to earn COIN other ways. 5 stars if support didn't suck.