I've been using an app called Avenza Maps on my Android phone. It uses the GPS to pinpoint your location on a map and can draw a line where you have been. There are several free BLM maps of the Quartzsite area that I've found useful for exploring the area. I also use the app for forest service maps at home in Oregon. The app itself is free and many maps are free. https://www.avenzamaps.com/maps/search.html