Looks informative but need English version If this app is aimed for local or people who can read Japanese, i think it is a good app to have. Unfortunately, if you can not read Japanese, this is a useless app.
The definitive transport app! Timetables and Train service information for Japan
About Tokyo Metro and all 13 lines of the Toei Subway, Time and distance of the transfer, it is an application that displays the optimum vehicle to transfer.
"JR East application" is the application that provides the deals convenient to customers having you use it and train-station, store of JR East.