How to Get Money on Cash App Refund Looking for the Cash App Refund then following us…. Cash App is a mobile money transfer app developed by Square INC. With the help of Cash App, you can transfer money, pay bills, and buy products with cashless money. Now, there are times when Cash App fails to do money transactions. Read the article to know why your Cash App Payment Failed. Helpline Supports is Online 24*7 Technical Support Provider At the point when the Customer Support administration.