I regularly use G-pay app . Every time I pay my bills a minimum amount of cashback they will provide. One of the best UPI app from google. Google the most trusted company in the world.
User interface is good. concept is good. Look for the best offers.
One of my colleague even one lakh from scratch card . Keep using G-pay app and get cashback almost every time.
Invite your friends and get 51 INR . Keep checking offers