Topo Maps+ Pro comes with US NeoTreks backcountry maps and overlays. To create their maps NeoTreks collected data from every national park, national forest, and BLM office in the country. The result is an unparalleled mapping product for recreation and rural use. They collected over 260,000 miles of trails as well as other pertinent outdoor data including 392 different land ownership classifications representing 3,017 land management agencies, over 1 million points of interest, as well as detailed hydrography, and terrain modeling.
You can change the map simply by tapping on the map icon in the upper right corner.
You can also use NeoTreks maps and overlays on top of other maps. Using their road and label overlay on top of USGS or US Forest Service maps make it a lot easier to orientate yourself on the map as you zoom in.

