Uses the GPS sensor, Magnetic Field Sensor and Accelerometer to determine the distance and direction to a GPS waypoint. Does not need to be held level. Normally a compass needs to be level to get the correct reading, but this app uses the accelerometer reading to convert the magnetic field reading back to the horizontal plane. In addition to the direction and distance to the waypoint, a compass ring shows the current heading. North points to True North (i.e. The direction is corrected for t