Speed Tracker ★★★☆☆ ($1.99 / App Store) for the iPhone is a GPS speedometer and trip computer. So it tracks and shows in real time the speed you are moving, the time it takes to get from locations and the distance traveled. The user interface is fairly well done and looks like what a modern speedometer should but is not accurate enough of the time. While this may be due to hardware limitations, an app that specifically is made to measure things should be very accurate.
