When comparing Fitbit Charge vs Fitbit Flex 2, the Slant community recommends Fitbit Flex 2 for most people. In the question“What are the best fitness trackers?” Fitbit Flex 2 is ranked 9th while Fitbit Charge is ranked 26th. The most important reason people chose Fitbit Flex 2 is:
The fitness tracker is completely waterproof and keeps track of your laps, pace, and total duration of your swim.
Specs
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Pros
Pro Integrates social features
Users can see their friends' activity, compete one-on-one, and earn badges.
Pro Battery lasts a week or more on a single charge
The battery is rated for 7 days, and has been tested up to 9 days by reviewers.
Pro Multifunction display
In addition to fitness metrics, a Fitbit Charge synced with a phone will display time and caller ID.
Pro Smart alarm wakes you up at the optimal time
The Charge tracks sleep cycles, and its alarm can be configured to take this into account, attempting to select an optimal wake time.
Pro Great option for swimmers
The fitness tracker is completely waterproof and keeps track of your laps, pace, and total duration of your swim.
Pro Sleek design fits a variety of occasions
The Flex 2 is a thin band all the way around that has a modern and sleek design. Since it isn't super sporty in appearance, you can confidently wear it for a lot of different occasions without it looking out of place.
Pro The app and web platform do an excellent job of keeping you motivated
The Fitbit app lets you set goals and milestones which reward you with badges and trophies when reached.
You can also challenge friends and family, competing against them for top spot on the leader board.
Pro Replaceable wristband with lots of options available
The fitness tracker itself is a separate part from the wristband that can be taken out and put in a different band. Therefore, not only are there 10 wristband colors to choose from on the official store, a different color of band can be worn every day with the same tracker. There are even custom bands available from third-party vendors.
Cons
Con Flimsy two-prong wrist strap
Fitbit was expected to update their wrist strap with the Charge, but an upgraded buckle can only be purchased with Charge HR.
Con Underwhelming battery life
The fitness tracker's battery lasts about 3-4 days on average.
Con Can't be paired with external HR monitors
The Fitbit Flex 2 fitness tracker has no built in heart rate monitor and lacks the ability to pair with external HR monitors.