Fitbit is launching a premium subscription service aimed at helping users automatically track their calorie intake and activities, which is designed to motivate individuals seeking healthier lifestyles. The service targets tech-savvy individuals aged 25-45 with disposable income and aims to stand out in a crowded market by providing a comprehensive dieting solution that simplifies the process of achieving health goals. The proposed subscription model is expected to significantly increase revenue, with forecasts estimating a rise from $15 million in 2014 to $40.7 million by 2016.