The app is inaccurate because the compass built into the iPhone 5 is inaccurate. One minute it shows the sun 15 degrees to the right of its actual position, the next minute its 10 degrees too far to the left. Same thing with bearings and waypoints. This being tested far from magnetic interference. Also the battery lasted less than an hour on a full charge and the phone got very hot since all of the sensors were activated at once. This would not be useful for anything beyond taking the dog for a walk. I will stick to my real compass/map. They show more information, more accurately, and in a shorter period of time than any cell phone ever will. This app could potentially send you off in the wrong direction and put you in a life threatening situation.