Official topographic maps are the best outdoor maps of Japan.
A topographic map contains many details like height contours, small roads and land usage and is thus ideal for navigating outdoors.
In the Topo GPS app you can purchase access to the official topographic map of Japan. This map is produced by the Geospatial Information Authority of Japan (GSI).
Full access to the complete topographic map of Japan in Topo GPS costs €3.99. This is a one-time purchase and includes free future updates. The map is accessible on all devices that use the same Apple ID or Google Play account.
You can make the topographic maps offline available. In this way you are sure that the maps you need are always accessible.
The topographic map has a clear legend with explanations of all symbols.
The Topo GPS app offers many additional useful features to the topographic map. Like navigating, loading, planning and following routes and adding points to the map. Topo GPS contains all functions of a regular GPS device.