gps

I looking for suggestions for an offline App for Maps and GPS Tracking. I like to have my phone in airplane mode most of the time so offline maps are crucial. I heard Onyx is the go to App and it seems it ticks all my boxes, is this still the case?

I was very impressed with the waypoints on the CTX3030. New to the CTX. set four waypoints and two at some big rocks and they were spot on. Not off by 15 feet the supposed margin of error of commercial GPS. They were within I would say 1 foot of where I marked them in this test by the sets of...