I am using this app since last 6 monts and I am sharing my laat months experience.
At first I used this app to recharge my jio number because I was getting a cash back of 75rs, and now also I am getting some cashback offers.
Some time the transactions gets cancelled but maximum number of time it works.
It also allows to do transaction with Bhim app which is an central government upi app.
Easy to add money in paytm wallet.
I personally like the app as I dont have any bad fraud experience.
Recommended bill payment app to use.