【實用健康app】Spin Speed|最夯免費app-綠色工廠好玩App

Want to know how fast you're pedaling during a cycling class? SpinSpeed will give a quick and easy answer. Point the camera at the side of your knee or ankle to see your Spin Speed in RPM (revolutions per minute). You can also use SpinSpeed to determine the frequency of many moving objects. Try it on a porch swing or your dog's tag for a little fun!