Save phones battery and know where you are without using internet in the city of Tokyo with the help of three (3) type of maps: the offline maps and scaled offline subway maps, and find your desired subway stations via the subway diagram.
The unique offline subway maps are scaled to online maps so your location can be shown along with the nearby subway stations.
The subway diagram map help you find information about each route in color and the nearest subway stations.
The points of attractions & restaurants can be searched then plotted by key word or category. Each point of attraction has information such as rank of popularity, visit duration, etc.
It is frustrating when you found the subway station is in the opposite direction after your walked several blocks.
You can do more with the app. such as viewing friends current locations, collecting your locations into named trails and sharing with friends, note keeping, timer, etc.