I am using Paytm for recharging. The apps is very easy and simple. As the wallet is approved by RBI so it is secure to add money and to make transaction through it. Every day it updates some offers as promo codes for cash back. Now recharging with Paytm is money saving as well as time saving. Recharging mobile, data-card, DTH etc work very well. I am not getting any problem from Paytm. And I am happy with this.