價格：免費
檔案大小：20.3 MB
版本需求：需要 iOS 5.1.1 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Point your camera to the street perpendicularly, press calibrate, and start measure speeds by tracking the cars with your camera. Simple as that!
Enter your height, hold your phone to shoulder level (that is you normally do), point the thin red cross perpendicularly to the lane where cars are crossing and press CALIBRATE. Now you just have to follow the cars to get their speeds!
支援平台：iPhone, iPad