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Review of the Fitbit Flex fitness tracker

technologyEdward KiledjianComment

Fitbit is one of the early pioneers in mass market self measurement devices. to stay current and hip, they released the Fitbit Flex bracelet style tracker and I went hands on.

In the bracelet style health monitors, the 3 main players are Jawbone UP, Nike Fuelband and the Fitbit Flex. The Fitbit Flex is cheaper than its competitors but seems to offer more value for the money.


The design

The design a a clean bracelet style tracker that is easy to wear but that loses the instant feedback the other Fitbit devices offer with their screens. for this simple reason, some consumers may prefer the Fitbit one instead (which is a great device in its own right).


The Flex has handful of blinking lights that show how close you are to achieving your self-set target.

It is a comfortable plastic design that is easy to wear all day every day. It comes in sizes small and large and should fit most consumers fairly well. 

Some call it stylish others call all similar trackers ugly so you'll have to decide this one. I think its discreet and nice.

You have a choice of 5 stylish colors including black, slate, teal, tangerine and navy.

The device

The fitbit flex is designed for all day tracking including movement during the day and sleep at night. 

Paired with the IOS or Android app, it gains the ability to track other activities (besides steps) and calories from food intake. all useful when trying to leave a healthier lifestyle.


Similar to the one it offers a vibration based alarm (so as not to wake up your partner in the morning). The flex adds a new metric which represents the number of active minutes in a day.

You get a couple of days of use out of each charge.

The kit

The kit comes with the bracelet itself, a USB charger and a USB dongle for your computer (for wireless synchronization of data back to the Fitbit cloud).

It also comes with Bluetooth so you can sync the data on the run via your smartphone.


Start-up is a breeze. You download the small PC and/or smartphone app, create a Ftibit account or log in to an existing one, provide some information (such as age, sex,height, weight, etc)


Fitbit is a trusted tracker who is financially solid (which means they will be around). The Flex is a stylish, easy to use and wear device that will gamify fitness and maybe help you lose a couple of pounds.

The Fitbit One is still my preferred fitness tracker but the Flex is a nice option for people looking for a bracelet style model (the One is a clip on).