#3.You are what you eat

In Fitbit’s app, you can achieve and maintain your weight goal. You can enter your meals each day, and can track your progress towards an estimated date for your weight goal. This may be to decrease or increase your weight. It allows you to set a target date for achieving your weight goal and monitors your progress toward that goal based on caloric intake and burn.

#4.Notable features

The goal of many fitness trackers is to get you moving, and some even send notifications to remind you to get up and walk around. But what if the battery runs out? The battery in Jawbone's Up Move lasts several months, compared with the few days or few weeks that other devices offer. On Runtastic's app you can get more accurate distance readings because the phone has GPS.

#5.The elusive GPS

The Microsoft Band and the Fitbit surge have GPS, which is an all-in-one GPS watch, activity tracker, optical HR sensor for both 24x heart rate tracking and workouts, but they are currently in limited release. Sony's SmartWatch 3 also has GPS, but it's more smartwatch than fitness band.

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