For what it is worth, I have uploaded a bunch of maps to this site. These include the Singletrack Advocate's maps of Hillside, Kincaid, and Kincaid North Phase; the Anchorage trails map, The Chugach State Park map of Hillside trails, and the map of FNBP that is posted in the park.

The MakkaMappa app allows you to see your GPS position on these uploaded maps and it works even if you can't get a data signal.

The app is 99 cents.