Nice map but some traps
Overall the network map is very nice. Having your location within this is a great feature.
I used the app in Tokyo and came across some drawbacks: some station numbers are simply wrong (DT line). That is maybe not too difficult to sort out. It is more problematic that the navigation mode is not really helpful: there are so many ways through a city train network with special service trains, different prices, different frequencies over the day, different services at different times, current delays and so on. But the app does not consider this and gives you rather bold route suggestions which may take you far longer than indicated or turn out much more difficult than expected or even not possible.
Hence again, the map is great but for the promised features there are still some things to fix and really think through.
cojacoo about
City Rail Map - Travel Offline, v5.1.0