Self Tracker

Follower is a trip tracker: it records a sequence of steps during your trip, approximately every 500 meters if you choose Fast trip (by car) or 200 meters if you choose Slow trip (by foot). The main view shows a map, centered on your curremt position. 
 To start recording, hit the Start button: its title changes to Stop; hitting it again the recording stops.
 If you hit the Clear Trip button, all the recordes steps are cleared, and a new trip begins.
 If you hit the Review button, and you have at least two steps recorded, the recording stops and a different view is shown, with all the recorded steps connected by red lines. The total trip length is anso shown.
 Hitting the Exit button, the main view is shown again, and you can restart recording.
 The last two buttons, Save and Reload, may be used to save the full sequence of the current trip on a local disk file, and to retrieve it later.