Easy way to use the GPS, Compass, and camera to find the coordinates of a remote point.
Free On and Offline mapping using a wide variety of map sources.
Enter land parcel data (lines and curves) and quickly see a plot and the area enclosed.
See what the GPS satellites are doing with a sky view and signal to noise ratios for all in view. Nice graphics.
Good GIS app to view ESRI mapping info.
The official CAD file viewer / markup app.