Fitbit is a new company located in San Francisco in America, which is committed to research, promote the healthy products to change people's lifestyles. Fitbit: Get fit in style. Fitbit app is the official app for activity trackers and more. It works freely with Fitbit activity trackers and smart scales. It helps you manage weight, eat healthy food, sleep well and get yourself active. This application can fit with Fitbit activity trackers and smart scales. The features will be introduced as follows: Use Fitbit to sync wirelessly with Fitbit Surge, Charge, Flex and so on. Track your steps, hikes using GPS. Log activities like yoga to keep you on track. Fitbit Surge will record your heart rate tracking the whole day. Users can also compete with their friends about the daily challenges. Record your calories spent each day. Sales on Holiday Season Don’t hesitate to get a Fitbit Charge 3 on the boxing day sales! You can save up to 32%. The best gift for yourself or your friends and family is a device that can you stay healthy and reach your training goal. Conclusion Why is Fitbit so popular? It can sync the data through connecting with the Bluetooth directly. Its functions are entirely consistent with Android and iOS. It will become your best friend to supervise your health. Come and exercise yourself now!