This simple application will always show you your current speed.
Try it while driving in the car or jogging.
And it also has features:
- HUD: can be used in the car so the data reflects on the windshield, while device lays down.
- Maximum speed and total distance
- Saving history
*Note that in order to use it you device has to have GPS chip.
*GPS chip may not inside buildings.
iCarpenter™ 
Downloader-Pro