Delhi Metro

Metro is what keeps this city running, literally, with a daily ridership of 2.54 million people on an average. And now, that the facility has expanded and covers mostly the entire city, an app that can guide you through the routes and lines of the metro comes in really handy. All you have to do is put in your start and end station, and the app tells you everything from the route, the amount of time it takes, and even alternative routes, if you might need them.