Yes. I have Garmin and DeLorme GPS units. It will do everything they will do, plus some. The main disadvantage of the app. is battery life vs. that of a GPS unit. You can create tracks, waypoints, tag photo's to positions, etc.

Kind of funny, the first time I used it I was trying to take a different route to a stand and was using the phone to create a track of the route being taken. About halfway there, my phone starts talking, saying I've been gone so many minutes, have traveled so far at an average of x mph. Got to remember to turn the sound off when hunting.

I also like the ease you can download the tracks to Google Earth and to the DeLorme Topo USA software.