NP Maps - Yellowstone

NP Maps Yellowstone is an offline map app that brings official National Park Service (NPS) and USGS topographic maps to your iPhone or iPad. It shows your location in real time, works without cellular data, and can download official USGS topography for the USA so you can navigate even in remote areas. It links maps to Apple Maps for familiar navigation and provides a comprehensive index into maps for ID, MT, and WY.

Key features include preloaded Yellowstone and Grand Teton NPS maps, access to a library of 150 NPS and 60,000+ USGS/USFS maps, high-resolution rendering, geocode search, AR waypoints, route creation, GPS tracking, offline operation, background downloads, and GPX import/export. A subscription removes ads and unlocks more map downloads, while the first several maps are complimentary.