Survey Junkie: This survey app compensates users for providing feedback on a range of goods and services. Users can use PayPal or e-gift slots bingo onlinecards to exchange their earnings for cash. 5. . Once known as Ebates, Rakuten is an app that offers cash back to users who shop at over 2,500 stores through the app. Cash back is available to users on their purchases, and it is distributed quarterly by PayPal or check. 1.