Gaia GPS is described as «Plan trips and record GPS tracks for free, with the best outdoor app. Browse hiking trail maps, hunting units, and scout offroad camping trips. Buy a membership to download maps, including topos, aerial imagery, public/private land ownership, and National Geographic» and is a Map service in the travel & location category. There are more than 10 alternatives to Gaia GPS for a variety of platforms, including Android, iPhone, iPad, Android Tablet and Online / Web-based. The best alternative is OsmAnd, which is both free and Open Source. Other great apps like Gaia GPS are Organic Maps, Transportr, AllTrails and Komoot.Gaia GPS alternatives are mainly Map Services but may also be GPS Navigation Services or Travel Planners. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Gaia GPS.