GeoPlayer records your activity, which include location/heading/motion, and draw these data on the map while you are moving around. The motion data contains walking/running/automotive data if your iPhone has motion co-processer (M7). These information will be saved as GPX data and can be replay in Playback mode.
[Line color ]
Blue: Stationary
Orange: Walking
Red : Running
Green : Automotive
[ Annotation ]
Drop a pin every 5/10/30 minutes.