It might sound crazy with the small woods here in NJ. But, its easy to get lost on flat wooded ground. When im in PA and have the hills to use as landmarks (walk in uphill walk out downhill) along with other points. At home in NJ I have the sun and if im lucky I can find a stream or something to use as reference. Usually im not far from the truck but even a few hundred yards into the woods a person can get turned around without to much trouble. Once I was within 75yds of my truck in thick cover at night. Hit the door unlock button and was able to see the truck lights. Without that I was walking about 45 degrees off coarse. So anyway I am looking for a simple app for my android that will let me use the GPS without cell service. Will track my walking route and let me set a couple of waypoints such as deerstand location or an area where I have seen good sign. If its overlaid on a topo that would be even better. But I want simple.