Paytm is the best app I feel .I always pay my bills through this app and guess what! they always give you cash back which you can always redeem later.i have been using this app for a long time and it is growing in a better way.good customer support.
You dont have to go anywhere to pay bills and for recharge.Its also easy to redeem your cashback. No terms and conditions.I recently booked my flight tickets too through Paytm.Got a good amount of cashback.
Its an all in one user app.thumbs up.