Chartr is an online ticketing platform for Delhi buses, which allows you to pay for bus tickets by using the QR code. You can also track all the routes and find out when the buses will be arriving at your destination.

Using the app, you will be able to find out the time of the arrival of the buses at any bus stop in Delhi. You will also be able to buy tickets online, which not only saves you the trouble of purchasing a physical ticket but can also prevent you from being late to your trip.

This is a very user-friendly app available for android devices.