I can't post a screen shot right now, but it worked beautifully for me. You simply start the app and it will show you your lat/long postion, elevation and mph if moving. You can start a new track, edit an old one, etc.

For instance, I let it track me one day driving. After you save the track, you can go back and see elevations and lat/long along the path, and like is stated above, you can export the KML files to Google Earth and see where you've been.