A free app for Android, by sphinx.
Delhi Metro is an application for android users. It provides information about Delhi Metro, the premier public transport system in Delhi, India. You can find the route between any two stations on the map, along with the fare, and the time required to reach the next station.
It is an offline application and does not need any internet connection to operate. It provides information about the stations, lines, and the routes, and it gives you the option to find your nearest station and view the route map.
It has a fare calculator and a smart card option. You can find out how much the fare will be and what kind of smart card is required.