directU Maps is an offline map browser application. It's free and simple - download it from AppStore!

Features

All map files are preloaded with full details.
No need for an internet connection.
Saves roaming fees abroad.
Saves time checking your current location!
Saves a headache if you're lost in the wilderness without internet connection.

OSM

OpenStreetMap is a free editable map of the whole world. It is made by people like you. Check out www.openstreetmap.org for more information and to contribute.

Note

Currently Germany and the United States are supported in separate products.