OsmAnd is described as 'Navigation app with offline and online OSM maps, turn-by-turn voice guidance, cycling and driving modes, GPX tracking, POI search, and monthly updates' and is a very popular GPS Navigation service in the travel & location category. There are more than 100 alternatives to OsmAnd for a variety of platforms, including Android, iPhone, Web-based, iPad and Android Tablet apps. The best OsmAnd alternative is CoMaps, which is both free and Open Source. Other great apps like OsmAnd are Organic Maps, OpenStreetMap, Google Maps and Magic Earth.