Wow that looks really useful, I did not know of this app. Did anyone here on HN use it successfully? Having a single app to allow navigating cities and buying tickets is something I have been wishing for lately (especially in cities where there is no way to buy tickets either online or via an app).
I use Citymapper extensively on trips to cities it covers. It's at its best in London (where, IIRC, the dev team is based): there, it's a life-saver. It's also effective in other first-rank anglophone world cities, such as New York. I've found its coverage can be patchy/incomplete in some cities, presumably because the data sources they aggregate are incomplete or inaccurate: at its worst, it degrades gracefully to t…
I don’t know how they undercut TfL on the price but I presume they’re doing something tricky with redistributing monthly or annual passes.