Paytm is one of the biggest and most popular online transaction app in india, because it provides good services and gives many platforms for online transaction, after demonitisation of 500 and 1000 currency we can find service of paytm everywere maybe small vendors to big super market, not only transaction it has made easy for common people to pay there water bill, gas bill, electricity bill, mobile recharges etc, even you can book your train, bus, flight tickets.also offers you great offers and discount.also online shopping is available and many more, my personal experience with paytm is awesome, I am using it and will continue to do so.
