Fitbit LLC., is an American consumer electronics and fitness company formerly known as Healthy Metrics Research, which changed to its current name in October 2007 and is headquartered in San Francisco, California. It has a wide range of products, including smartwatches, activity trackers and wireless wearable smart products, and has developed three apps that are very popular with Google: the Fitbit ECG App, Aria Air Update and Fitbit. Among them, Fitbit is a sports and health software application carefully crafted by Fitbit LLC. After wearing related equipment, this app can help you record various data and help you live a healthier life.