For picky people like me.
Nice app and the constant weather information is a nice touch especially since it changes to the current area you in. I really like this one out of all the different ones Ive tried. Good price. If your looking for a speed app then I recommend this one. Lots of features and options/settings. Doesnt kill your battery like some of the others. Hope this helps in your decision. Im on iPhone 4 iOS 4.1.
TomStev about
iSpeed Speedometer, v1.7