Would be useful

Would be useful if you could add/create a map with a PDF file instead of a poor quality picture of a map. As is this is a fairly useless app. Again. Great concept. Just doesnt work very well. I loaded a map, set an anchor point and started moving. I was going north but when i tried to check my position on the map a while later it said I was so far south I was off the map. I tried to set another anchor point but I cant tell if theyre cumulative or if adding a second erases the first. After adding 3 anchor points (or at least changing it a couple times) it was still getting my location very wrong. Disappointing.

Lance J. Uppercut about GPS on ski map by Maprika