Key features:
+All maps are offline. No internet connection required.
+High resolution map. Station name are clear and big enough to identify.
+Can zoom in, zoom out and scroll vertical and horizontal.
+Easy to use. Quick to find your place.
+Free of charge.

This app includes:
+ TOKYO TRAIN MAP
+ TOKYO SUBWAY MAP
+ OSAKA TRAIN SUBWAY MAP
+ KYOTO SUBWAY MAP
+ KANSAI AREA TRAIN MAPS
+ SAPPORO-SENDAI-KOBE-FUKUOKA MAPS