This is really very good app for day to day transaction, recharge your mobile, pay the bills of telephone, electricty, dth and many more.I have created our UPI and doing any transaction gives us some% cashback in every transation this is one of the best app ever, only I could not found payment receipt which may be required in some cases but anyways we take screenshot and can put it wherever required insted of system generated payment receipt.I receipt also generats then it will become more usefull for official payment option.