Fitbit One review: Powerful fitness tracker, weak design

The $99.95 Fitbit One is one of the most advanced fitness trackers money can buy. Besides measuring steps, this gadget can record how many stairs you climb, the calories you burn, and even the quality of your sleep. Its clippable design, however, isn’t as convenient or secure as competing wrist-style devices such as the Jawbone Up, Nike FuelBand, and even Fitbit’s own Flex. And unlike the Fitbit One, those devices are made to be worn around the clock, not just clipped to clothing when you hit the gym or head out for a run. So for those trying to keep tabs on every move you make, the One isn’t ideal.


If you’ve owned or played with Fitbit’s past devices such as the original Fitbit tracker and Fitbit Ultra, the One will certainly look and feel familiar. Small and oval-shaped, the tiny Fitbit One is easy to carry even when placed in its silicone cover and clip.

The idea is to use the clip to attach the One to clothing, either a belt, pants pocket, or shirt. Once clipped on, the gadget records your daily activity. There’s just one button on the One. Pressing it toggles through the product’s various screens — the time, steps, stairs, distance traveled, and calories burned through activity. A final screen shows a flower graphic that grows and shrinks in relation to how much you’ve moved recently. The longer the flower stem, the better.

You can also slip the Fitbit One right into pockets without wrapping it in its rubbery cover; Fitbit claims the tracker will be just as accurate. I personally would advise against doing so; the One is so tiny that it wouldn’t be hard to lose it. In fact, even when clipped to my waist, I often forgot the gadget was there.

This may not sound like a problem, but when coupled with the product’s problematic clip case, it could become one in a big way. Large messenger bags, the type I usually wear at waist level, can cause the clip to unhook; since the One is so light, you won’t realize it’s gone until too late.

Getting in and out of cars, seats, or bending constantly to pick up and put down fussy toddlers can cause the same malfunction. Hey, that’s pretty much what my entire weekend looks like. I lost two Fitbit One units within my test period, which points to a serious design oversight in my view. I had similar clip failures when using the Fitbit Zip, which has an almost identical clippable case. This is why I believe wristband products like the Nike FuelBand, Jawbone Up, and Fitbit Flex make the most sense for 24-7 use.

Another issue to consider is how easy it is to accidentally throw a product like this into the wash. I admit I did this with the Fitbit Zip and came embarrassingly close to making the same mistake with the One on numerous occasions. Luckily my Zip emerged from the washing machine no worse for wear. That’s likely because it, the Fitbit One, and Fitbit Flex are splash- and sweatproof.

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Features and performance

Truly a pedometer on steroids, the Fitbit One uses a built-in accelerometer to track your movements in measurements of steps and distance traveled (miles). It also logs how well you sleep in terms of actual time spent in slumber and how many wakeful interruptions you experienced overnight.

One drawback to sleep tracking on the Fitbit One is that you have to remove the device from its clip sheath and place it in a soft cloth strap designed for nighttime use. I found this an inconvenient extra step, especially when dead tired. Also, competing fitness bands such as the Jawbone Up, Basis Band, and the Fitbit Flex tackle sleep duty without relying on a separate strap.

I must give credit to the Basis Band, which, at least in theory, records sleep automatically. Even when strapped to my wrist, many times I failed to remember to hold down the Fitbit One’s or even the Jawbone Up’s buttons to activate their sleep mode after a particularly long day. The same goes for shutting down sleep mode in the morning.

The real strength of the One, as with Fitbit’s other devices, is its ability to connect to the company’s online service. Data measured by the One tracker is pushed to servers living in the cloud. From there you can sift through your stats either via Fitbit’s desktop Web site or through companion mobile apps for iOS and Android.

With all this data at my fingertips, I was able to easily see my activity over days, weeks, months, and the past year. To take fitness beyond casually logging workouts, runs, and walks, the Fitbit service lets you enter the food and drinks you consume. With info that’s pulled from a large database or that’s custom-created, the calories for the meals you eat are set against the calories you burn.

Believe me when I say that calorie counting is a chore, but the Fitbit app and Web site are the easiest platforms I’ve used to get the job done. The service saves past foods entered and creates a list of items you punch in often as well. This level of biometric data combined with the company’s Aria Wi-Fi Smart Scale, which records the weight of multiple household members and shoots info to the cloud, and you begin to see the value these connected gizmos bring.

Fitbit bundles the One with a USB Bluetooth adapter that you use to connect the device wirelessly to PCs and Macs. The gadget also can link to smartphones over Bluetooth as well — it’s the first tracker to do so — but the list of supported devices is a short one. At the moment, compatible handsets includeiPhones, and Samsung Galaxy S3 and Galaxy Note devices. Fitbit does plan to make Bluetooth communication with the Android app available to a wider range of phones as soon as possible.

Unlike the Fitbit Zip, which uses a watch battery, the Fitbit One is powered by a rechargeable battery. Just slip the device out of its case and plug it into its USB adapter to recharge. I never had problems with the One’s longevity; the tracker typically lasted a full work week without needing a power boost.



The Fitbit One is a perfect example of an excellent product packed with a host of great features undone by a problematic design. By connecting to Fitbit’s powerful analytical tools in the cloud and helping you count calories, stairs climbed, and sleep quality, the One goes way beyond one-trick pedometers.

That said, its clip cover doesn’t grip as reliably as it should, which isn’t merely an annoyance. It could result in a lost device, or indeed multiple devices, as in my case. If the One cost $20, that might be a forgivable offense, but at $99.95 it’s a serious issue.

This is why I suggest purchasing the Fitbit One only if you can’t stand wrapping a gadget around your wrist. For all others I recommend holding out for the upcoming Fitbit Flex, which sports an identical $99.95 sticker price but uses a more convenient and secure wrist band design. It also matches the One’s features blow for blow, save counting stairs and a having an alphanumeric display.

Another choice is the more expensive $129.99 Jawbone Up if a more ergonomic design and a longer battery life (but no wireless syncing) are your priorities. All three current Fitbit products, the $59.95 entry-level Zip, the One, and the Flex, leverage a deep well of online data. That’s hard to resist for casual users and fitness addicts alike.


The Fitbit One offers an intuitive way to track and analyze your sleep, the steps you take, stairs climbed, and calories burned. Small and light, the One is very portable. Its OLED screen, which has a clock, is easy to read. It sends data to phones over Bluetooth.


The Fitbit One’s clip often comes loose. The One’s Bluetooth syncing function only works with a few compatible handsets thus far.

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It smells. I am hoping the smell will dissipate, it is very strong. I LOVE the color but that's about it. It sits odd on my wrist and is very bulky. it doesn't count my steps when I push the stroller. I like the option of the bracelet but I think wearing it clipped to my bra is the best still. I really thought this was going to be amazing so I am a little disappointed.UPDATE: the company has emailed me after seeing my review. They plan to send me a new bracelet. I think the company really cares and I will consider changing my review when I receive the new bracelet and see if it doesn't smell and works better. All and all I would say atleast the company cares.
March 24, 2015
I love that I can now wear my Fitbit One on my wrist. Thought I would like the hidden clip feature of the One, but find most days that not seeing my numbers easily defeats the incentive I seem to need. This accessory gives me the best of both worlds. I can have it hidden at times and on my wrist most of the time. The band is made of soft comfortable material and it holds the Fitbit securely. The only negative I have is the color I chose. I went with white but it is more a butter cream color and not the bright white that is displayed on the picture. Still I am very happy with this purchase.
March 7, 2015
Video:Sorry about the quality! The quality is good on my camera but as soon as I uploaded it to Amazon it deteriorates. :(I will be working on swapping out extensions. edit: I just re-uploaded so hopefully the file is better.___________________________________________________________________________________________________First of all the bracelet in itself is ingenious. Finally a bracelet to hold my fitbit!Now down to the functionality and design:Size:The size of this bracelet was spot on. My wrist is about 5 1/2" in circumference and a size small is perfect. On it's tightest setting it's actually a bit too tight so I'd imagine someone even smaller than me could use a size small and be just fine.The overall size of the bracelet is a bit bulky. I don't exactly LOVE wearing this unless I'm working out, and definitely not to sleep in I'm a sensitive sleeper so anything bulky or even slightly out of place bothers me).However it's lightweight so it doesn't weight down your arm or anything :)Color:I ordered this bracelet in Icey Blue and it looks exactly like the picture- a nice light blue; almost periwinkle, and goes well with most of my clothes.It also comes with colored little bands I think you can use to decorate and secure the bracelet in roughly 8 different colors. However, I put them aside because they smelled of awfully strong plastic.Security:If you're looking for something to keep your fitbit secure, this is it. It's a bit difficult to put your fitbit in the bracelet but once it's in there, it's in there!Read more ›
March 7, 2015
Fitbit One review: Powerful fitness tracker, weak design
9 Total Score

Ease of use
Design and form factor
User Rating: 4.11 (33 votes)
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