TOPO 4.2

TOPO! Features fives layers of the best maps available—from National Geographic Atlas maps to the most detailed USGS topographic maps. Loaded with features and functionality, TOPO! Is essential gear for outdoor enthusiasts.
Features include 3D views and fly-throughs, elevation profiling that allows you to draw a route and immediately calculate elevation gain or loss, and live map updating that lets you search for and download updated USGS quads. Customization options such as updated street overlays that can be toggled on or off, the ability to add your own notes and photos, and the option to choose from either lat/long or UTM grids let you create the perfect map for your activity.