Citymapper

What it does

Door-to-door routing across metro, bus, rail, bike, scooter and walking in the cities it covers, with live departures, disruption warnings and the small details that matter locally — which exit, which end of the platform, whether the rain makes the bus the better call. The web version works without an account and mirrors the app. Its coverage is city-by-city rather than global, and it is excellent inside that list and useless outside it.

Best for

• Arriving in a new city
• Comparing tube versus bus versus bike

Where it stops