This app shows map of japan using GSI (Geospatial Information Authority of Japan) tile service. Available map type is Standard, Pale, White, Photo, English, Altitude color.

This app can memorize a position in your phone and scroll that position instantly. In manage position display positions can be renamed, aligned or removed.

Unlike other map app, this app does not require any special permissions such like GPS access permission.

Reference: GSI/GSI tile map service
https://maps.gsi.go.jp/development/ichiran.html