Easy to use, no map downloads required, all data is packed inside. Works entirely without internet connection. No data costs. No exposure to insecure wifi networks.
Configurable map detail. Highest detail with topographic mode. Personalize with user waypoints and saved map views. No advertising, no in-app purchases.
Minimal permissions. No access to your private data (apart from your location). No spyware.
This map is based on data (C) OpenStreetmap (http://www.openstreetmap.org) and contributors under a Creative Commons Attribution/Share Alike License (http://creativecommons.org/licenses/by-sa/2.0/).