onX Hunt is great, I use it to keep myself off private lands when hunting out of state. But if you just need a map and the ability to track yourself & set waypoints (it has many more features as well) then Topo Maps app is what the guys and I use at work. We have several options from standard military issue GPS to hand held or wrist mounted Garmin, and yet we all use this app. You just always seem to have your phone on you anyways. I don't remember paying anything for the app. Even if I did it must have been cheap, maybe a few bucks. Plus it would be a one time fee compared to the $40 every year I pay for to use onX for a couple weeks. There may be better options (apps) but this is what we've used for the past few years.