The app gets data directly from Transport for London (the local government body), therefore it is quite reliable. An Oyster Card integration would be useful but it does its job anyway and simplifies the very complex transport system.
This is the free version of this app, supported by ads. It’s got the official map of the London underground, offline routing with map and text views, GPS, and more. Excellent app, easy to use – and the ads are not that intrusive.
This is the best of the free London Tube maps. It’s a simple interface, has a journey planner, tube map, status, and departure boards. All work perfectly and accurately. Recommend.
This app lets you look at the London underground by station, look at the tube map, gives live status, journey planning, and details about journeys. It’s a great app, but is missing the above-ground and bus info.
This simple app has 3 maps – a subway map, a bus map, and a city map. Simple and easy to use – but the bus map is only for central London.
+2 Bonus to check the service status
Unfortunately, London underground (and overground, tram lines etc) is not that reliable at all. It is advised to check the service status before departure. TfL service status from GoMobileNow makes this check really straightforward.
This London Tube app has live status and departure info with a widget that updates the live data on your home screen. It’s pretty good, easy to use, and a great idea…. but not always accurate.