Paytm is a good app in my view.It is very much useful for mobile recharges.i use to recharge from paytm every time.
You can send money or request money from your friends through this app.They will offer some codes to paytm users if we use that codes we will get cashback for recharges.I used a code for my mobile and I have recharged Rs.150 & I got cash back of Rs.150 to paytm.we can also transfer this cash back money to our Bank Account.It is a good app For recharges.