Activity trackers

Fitbit Flex
Price range:
$88.49 - $119.00
Price it button
Summary: This activity tracker, the Fitbit Flex, counts steps, tracks calories, logs calorie intake from foods you consume, monitors sleep efficiency, syncs wirelessly to your computer or smart phone, and it has an indicator to tell you how close you are to your daily activity goal. You also can swim or shower with this tracker and it has an alarm.
Dividing line
Community icon26 people have reviewed this model.
Type: Cannot be read in real time
About - Fitbit Flex

The Fitbit Flex is part of the activity tracker test program at Consumer Reports. In our lab tests, activity trackers models like the Flex are rated on multiple criteria, such as those listed below.

Step count accuracy:
Combined step count accuracy for walking for five minutes on a level treadmill at 3 mph, using an elliptical exerciser for five minutes, walking up and down several flights of stairs and picking up toys from the floor.

Calorie accuracy:
Combined calorie use accuracy from walking on a level treadmill at 3 mph for five minutes and using an elliptical exerciser for five minutes.

Ease of use and features:
Ease of use includes clarity of instructions and how easy it was to operate the device, and important features.
User Reviews - Fitbit Flex
User Reviews
Already own it? Write a review
Do not buy this model
Best Uses
Buy model that automatically monitors sleep. Flex does not. Large size barely fit me. I lost it after it popped off without my knowledge.
How long have you owned it:
One-to-three months
Bottom Line
No, I would not recommend this to a friend.
(1 of 1 customers found this review helpful)
Great product!!!!
Aria Weight Scale
Calories Intake
Compete With Friends
Keeps Records Online
Keep Tracks Of Your Steps
Sleep Monitoring
Does Not Track Biking
Best Uses
Keep On 247
Keep On For All Activity
I received as a gift, made a difference to keep track of my daily steps, I lost ten pounds in the first 5 months. After 6 months the fit bit wouldn't hold a charge, I contacted Fitbit customer service,within 2 weeks I received a new Fitbit, no hassle- no receipt- no question asked. I would definitely buy this product again.
How long have you owned it:
More than six months
Bottom Line
Yes, I would recommend this to a friend.
Below Average
Moderate price
Computer Tracking Only
Fragile construction
Poor Battery Life
Best Uses
Purchased to replace Nike product. Lacks tracking on device. Short battery life. Fragile - mine broke in two months due to faulty assembly. Difficult band to connect one hand.
How long have you owned it:
More than six months
Bottom Line
No, I would not recommend this to a friend.
See all Models
Nobody Tests Like
We Do
Our testers put 100s of products through their paces at our National Testing and Research Center. Learn more about how we test for:
Learn more