Meet the SunnyFit Bike Cadence + Speed Sensor (CB100): a smart sensor that helps you track your indoor and outdoor rides on your smartphone. It is compatible with iOS and Android devices. You can use the companion app to track your progress or explore over 100 workouts.
The SunnyFit CB100 Sensor is pretty easy to install. Simply put the sensor onto the rubberized mat, wrap it around your bike’s crank with the included bands, and you are set. You can find out more about it here.