GPS Tuner is an off-road navigation software for Pocket PC devices. While most car navigation software gives you the possibility of planning your route based on a road network, GPS Tuner gives you the ability of navigation where the roads end. GPS Tuner is an excellent tool for hiking, geocaching, boating, flying, driving and many other sporting activities. GPS Tuner is an excellent tool for hiking, geocaching, boating, flying, driving and many other sporting activities, where the monitoring of duration, distance and speed can be important.