Fitbit Inc. is a company headquartered in San Francisco, California, United States. Founded and managed by James Park and Eric Friedman, the company is known for its products of the same name, which are activity trackers, wireless-enabled wearable devices that measure data such as the number of steps walked, quality of sleep, and other personal metrics. The first of these was the Fitbit Tracker. The average price of a Fitbit is between $60 and $130, depending on the model. However, data cannot be downloaded off the Fitbit website unless one pays the premium membership price of $49 per year. Intraday data analysis cannot be downloaded at all.