Drawing on real-time data, Citymapper helps chart your fastest public transit trip.
Set your best route: Citymapper pulls data from a broad range of mapping, mass-transit, and ride-sharing sources to show the best transportation choices based on real-time data. The app displays a live estimate of travel time -- including time spent walking -- which it updates every minute. The yellow radio-signal icon next to a time indicates it is being updated in real time.
Share your trip with friends: After you set a route, share your trip with friends, who can watch your travels in real time and monitor your estimated arrival time.
Live bus routes: While waiting for a bus, you can watch its approach in real time on the map and view upcoming route schedules.
Offline planning: If you are traveling off the grid, you can save a single trip or an entire itinerary so that you can view it offline.
Local information: Citymapper pulls information from services, such as Yelp, to offer crowd-sourced location cards that include business hours, ratings, and contact information.
Positive reinforcement: At the end of a public-transit trip, the app displays a card that estimates how many calories you burned, how many trees you saved, and how much money you pocketed by taking public transit instead of driving.
Not an active participant: After you start your journey, the app isn't as participatory in your trip as, say, Google Maps is. You can swipe between screens to see the legs of your journey but not much more.
Lacks deep city coverage: The app offers travel assistance for 40 or so international cities, including San Francisco, London, Moscow, Hong Kong, and Sydney. While Citymapper is looking to add more cities, its city coverage is not deep.
Citymapper pulls from a variety of mapping, transit, and crowd-sourced services to produce usable public-transit guidance. While other apps, such as Google Maps, can offer similar help, Citymapper's singular focus on public transit makes it a better choice for those who commute by bus or train.