I’ve had a lot of issues with the onx iPhone app but had notably less issues last year in the second half of my season than ever before and started to be able to rely on it. In September it had miserably failed me in an area where it was pretty critical and that really soured me. I have always used and loved Gaia, aside from private land layers I think Gaia is pretty superior. 75% of my hunts are nowhere near private land and for those I use Gaia exclusively. For the other 25% I really only use onx for e scouting. Gaia is much easier to cage high resolution sat imagery for large areas and I really like the fact that it gives you elevation profiles for tracks you create, but that only works with a data connection. It also seems that when viewing on a computer you get higher resolution in Gaia than in onx, onx imagery does not seem to be as clear at high zoom levels. Also a lot of areas on onx have clouds covering the terrain.