I am having mixed results with iPhone 5s/Gaia GPS: trying to navigate to a waypoint I put a minute ago I can never get closer than 15 meters, even as I am right next to it on the map. The GPS (or Gaia software) appears to be very imprecise and sluggish (compared to Garmin Etrex units that I am used to). I can walk by the waypoint on the map, and Gaia keeps showing the same 15 meter distance. This makes me question reliability of iPhone as a backcountry navigation unit. What's your experience?
Update: okay, I see the difference between "mark waypoint" and "mark waypoint NEAR ME". Interesting UI decision, waypoint marked in the middle of the viewport, which is not indicated. Still, I can never get closer than 15 meters to a point just marked, weird.
Update 2: almost certainly a problem in Gaia GPS. I can see the location marker get closer to the waypoint on the map than 15 meters, but the navigation line direction and length freeze at 15 meters and stay there until the distance gets larger again. It's like Gaia gives up calculating the vector below 15 meters or so. No way this is due to loss of precision (from my experience).
P.S. I am using iPhone with the SIM removed to eliminate dependency on the cell towers.
