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I once used it in Berlin (I'm not from Berlin) when there were unexpected line closures/delays. I could explain to the locals what was going on and the best routes to use. That was simply using the app. It had more info than the local staff/info screens.

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I used it in New York, and it also knew about line closures which other apps weren’t aware of.

One thing it’s bad at (ironically because it was made in London) is the data model for Tube stations, it seems to think a Tube station is a point, whereas they often sprawl underground over large distances. It doesn’t have much of a concept that you can be walking for 10 minutes to connect between lines, and will make dodgy suggestions on that basis.

The app certainly does take into account transfer times between lines. If you also require accessible transport it'll further take into account the transfer times by measuring the amount of lifts you need to take.

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