Relief Maps is described as 'GPS application focused on outdoor sports, the app is based on an beautiful and high-performance 3D map. Main features are : - 3D maps specialy designed for outdoor sports' and is an app in the Sport & Health category. There are six alternatives to Relief Maps for a variety of platforms, including Windows, Android, iPhone, iPad and Android Tablet. The best alternative is OpenStreetMap, which is both free and Open Source. Other great apps like Relief Maps are Google Earth (Free Personal), OsmAnd (Freemium, Open Source), Organic Maps (Free, Open Source) and NASA World Wind (Free, Open Source).
OpenStreetMap is a project aimed squarely at creating and providing free geographic data such as street maps to anyone who wants them. It is a free editable map of the whole world. It is made by people like you.
Google Earth lets you fly anywhere on Earth to view satellite imagery, maps, terrain, 3D buildings, from galaxies in outer space to the canyons of the ocean. You can explore rich geographical content, save your toured places, and share with others.
World Wind lets you zoom from satellite altitude into any place on Earth. Leveraging Landsat satellite imagery and Shuttle Radar Topography Mission data, World Wind lets you experience Earth terrain in visually rich 3D, just as if you were really there.