Not perfect

The App shows all the stations but if you desire to maximize (by time or routing or other metric), this app will not do it. It only shows local trains between distant / major stations so if you are looking for a way to figure out when to jump on a local, express,limited express, unlimited, this will not do it. You will need google maps live which does a GREAT job for you. BUT if you are off line the tokyo rail map lite is all you need if you have a decent handle on the train system. If you are very beginner at this, then the pro version can be helpful.

Tony Aviator Traveler about Tokyo Rail Map+ Yokohama, Saitama, Chiba, v5.2