Odoter will show your speed in miles per hour, kilometers per hour and knots.
It is also the odometer. You can put the odometer on hold, by pressing the "Pause" button. When you press the "Continue" button, it will continue to measure the distance. "Reset" button will reset meters to zero.
Distance is shown in miles, kilometers and nautical miles.
Odoter also shows the direction in degrees and cardinal directions.
Your location shown on the map.
You can save route to gpx file, and manage files through iTunes.