SoundSpeedGun is described as 'For those who were always interested in how fast is an airplane flying around them, a car driving or RC model driving'. There are five alternatives to SoundSpeedGun for Android, iPhone, Blackberry and Android Tablet. The best alternative is Traffic Speed Gun. It's not free, so if you're looking for a free alternative, you could try Speed Gun or Real Speed Gun. Other great apps like SoundSpeedGun are iSpeed Gun (Paid) and IOYY Speed Gun (Free).
Speed Gun (Smart Speed) can measure the speed of a moving object by touch. Thera are several apps in the market. All of them are for the baseball. just ball speed. This speedometer can measure the speed of a moving object by touch.
This app is used to calculate the speed of moving objects. You can measure the speed of pedestrians, cars, bicycles and anything moving of Earth's surface. Before using this app you must enter your body height(in settings).