Tez is an online money transfer platform developed by Google themselves for Android OS. The one thing that I like the most about this app is the speed and reliability, not many apps do both, even the design of the app is so simple you have to just create a UPI code and this app will automatically sync your contacts etc. Just enter the amount select the contact you wanna send your money to, enter the UPI pin and kaboom your money is sent the next second.
There is also the reward program which allows you to win upto Rs.1000 for a transaction of Rs.150. And also it is very useful even for amounts as little as Rs.50 this app can be used.