I do use Navit [1] offline navigation which I belive uses offline maps based on OpenStreetMap. GUI is a bit quirky, but it works. Offline maps are downloaded from the application. I use simply snapshots apks from Navit's download page [2].
I've encoutered some bugs in the maps for new build roads. New means few weeks, but it otherwise works very good. It can be used as car navigation because energy consumption is rather fast so connecting to a car charger is a must.
I do use Navit [1] offline navigation which I belive uses offline maps based on OpenStreetMap. GUI is a bit quirky, but it works. Offline maps are downloaded from the application. I use simply snapshots apks from Navit's download page [2].
I've encoutered some bugs in the maps for new build roads. New means few weeks, but it otherwise works very good. It can be used as car navigation because energy consumption is rather fast so connecting to a car charger is a must.
[1] http://www.navit-project.org/ [2] http://download.navit-project.org/navit/android/svn/