速度計有助於了解我們的行進速度。
Speedometer helps to know the speed in which we are travelling. You can use this app when you are walking, running and travelling in vehicle. Check out the speed and you can gradually increase and decrease. The app will take some time to analyze the speed. This app wont show the speed if you are shaking your phone in your place. Check out how speed are you running. Download the app now.