Time Out tries and tests the best apps for city living. This week: get from A to B with the ultimate transport app Citymapper.
What is it?
Oh, just the world's most useful transport app. Tap in your destination and itíll instantly show you the best ways to get there by tube, bus, bike, foot, tram, minicab and riverboat. It's not just London: 38 cities from Birmingham to Sydney are exhaustively covered.
Why do I need it?
Citymapper has been around for a while, but it's still top of the league thanks to frequent updates - like a new function called Telescope that shows photos of where you're heading. It'll tell you everything from hire bike availability to interchange times between tube platforms. It's absorbed aspects of rival apps (like which part of the train will land you nearest the station exit) and includes offline maps, rain-safe routes and how many calories youíll burn on your journey. It's a hefty download, but delete your holiday snaps: every Londoner should have this on their phone.
Free. iOS and Android. 145MB. Download it from www.citymapper.com.