Fitbit Review 2025

Fitbit Product Line

Fitbit makes a wide range of products, from simple fitness trackers to sophisticated smartwatches. This review will focus on the two Fitbit models I tested: Charge 4, a fitness tracker with some smartwatch features, and the Sense smartwatch. Although some models won’t break the bank, Fitbit is not a bargain brand. Some of their best features require monthly subscriptions in addition to the equipment purchase price.

One other thing to keep in mind: Fitbit no longer sells the Charge 4, Versa 3 or Sense on their website, because they’ve upgraded to the Charge 6, Versa 4 and Sense 2. However, you can find the Charge 4, Versa 3 and Sense at other retailers, such as Best Buy and Amazon.

Below is a closer look at some of Fitbit’s popular products and services, so you can decide which device is right for you and your goals.

Fitbit Smartwatches

Fitbit Trackers

Fitbit Services and Miscellaneous Products

Unboxing My Fitbit Products

Instead of pretending that one size fits all wrists, Charge 4 and Sense each come boxed with a small and large silicone band, which is a nice touch. Putting on the Fitbit sometimes felt comfortable. On other occasions, I felt like I had to adjust the band repeatedly to keep it from digging into my skin. Fitbit recommends wearing the watch tighter on your wrist during exercise than other times to improve its skin-facing sensors, but I didn’t find it practical to change its position back and forth. The company also offers other watch bands and accessories, including a smart scale that can communicate with your Fitbit.

Besides the tracker itself, each Fitbit comes with a charger. Many consumer electronics share a charge port type, such as USB-C or Lightning (iOS), but Fitbit devices use their own connections.

Many smartwatches can’t go 48 hours between charges, requiring users to plug them in overnight. I’ve struggled to connect another brand’s smartwatch to its power adapter, often waking up to find that my watch did not charge at all. It would prevent me from wearing it that day.

For both of the Fitbits I tested, the charging connections were secure and easy to use right out of the box. Occasionally, the Charge 4 took a bit of fiddling to get seated just right. Luckily, both devices indicate when they are properly charging. Best of all, the watches can last multiple days without requiring a charge. The biggest issue was finding a time that I didn’t want to wear the device since wearing and charging are mutually exclusive. If I walked the dog while charging the device, I’d miss counting a few thousand steps!

Setting Up My Fitbit Trackers

As one can imagine, giving commands to a watch by pressing buttons is quite limited, even for those whose hands are perfectly healthy. The Fitbits I tried didn’t even have a button in the traditional sense. Instead, they had a small section sensitive to touch that they call an “inductive button.”

You need a smartphone or computer to use a Fitbit, which connects to the device via Wi-Fi or Bluetooth. The Charge 4 I tested took to Wi-Fi right away, but the Sense failed to hook up with multiple Wi-Fi networks repeatedly. After a system update, however, it finally connected to the network.

It’s easy to get data for the day right on the Fitbit, but your smartphone or computer can display massive amounts of past data, change watch faces and do tons more than can be accomplished with a simple click or swipe.

Let’s Get Physical

Each of the Fitbits I tested contains a built-in GPS and tracks simple metrics such as daily steps, distance, calories burned and floors climbed. You can display some or all of the daily totals on your customizable watch faces and easily change the targets to match your lifestyle.

Tracking Daily Metrics and Goals

My daily miles target was preset at 3.1 miles. When I ran every day, that was easy to achieve, but I came up short on days I didn’t work out. While exercising regularly, my weekly total exceeded 37 miles. My nightly dog walk was often interrupted by my Sense buzzing and displaying a visual reward acknowledging that I had accomplished five miles that day. Little touches like that can be inspirational for someone trying to stay fit.

When I didn’t exercise, the dog walks upped my weekly total to 21 miles, a far cry from more active weeks. Of course, your mileage will vary.

One unique metric that Fitbits track is called Active Zone Minutes. It’s calculated using your age and resting heart rate to provide you with a more personalized measurement of how hard you worked during any energizing activity beyond just steps. I would clock an Active Zone Minute if my heartbeat was higher than 93 beats per minute, and I would get double credit when it was higher than 115. During a week when I ran every day, I logged over 550 Active Zone Minutes, but only 132 during a low-exercise week.

Taking a look at my daily Fitbit metrics and Active Zone Minutes.

With those metrics popping up on my watch face throughout the day, aided by small vibrations giving reminders to move after being inactive for too long, it’s easy to see how a glance at the Fitbit motivates you to keep moving. It’s also fascinating to see the metrics displayed numerically and graphically on the app or website, including heartbeat tracking. Even though the watch face on the Charge 4 is smaller than the 1.5-inch, rounded, square-ish touch screen of the Sense and more difficult to read in sunlight, the data is all large and easy to read on a phone or computer.

Some studies have found that getting 7,000 steps a day could help you live longer.3 It’s easy to track your steps with a Fitbit. Check out my video below to learn more about getting in your daily steps!

Fitbit Tracking and Data Accuracy

Just how accurate is Fitbit’s data? Regarding the Sense’s electrocardiogram (ECG) app, federal regulators gave their OK to its algorithm’s ability to accurately detect atrial fibrillation from normal sinus rhythm.

On the other hand, since the Fitbit is usually worn on the wrist, a simple shake of the arm can cause the step counter to increase. I found that cooking could increase my step count a lot. Since those discrepancies tend to average out, I was fine relying on the metrics as an accurate relative measure of that day’s activity level. Even when I cooked multiple meals for my kids, I rarely hit my preset target of 10,000 steps in one day.

If anything, the data recorded was often lower because of missed steps and exercise when I wasn’t wearing the watch. The numbers may be rough, but you can still compare daily and weekly totals to one another. In addition to the graphs and numeric displays, Fitbit would often surprise me via email with a badge, such as the Skydiver badge for climbing 1,000 floors since I started tracking, or the London Underground badge for covering 250 miles. I somehow earned a Skyscraper badge for climbing 117 floors in a single day spent in my two-story house without even working out.

Earning my Fitbit Skyscraper badge.

During exercise, things got a little tricky. Fitbits recognize exercise sessions and display data after the fact, but I wanted to see my time and distance while running. To do so, I had to select “Run” from a list, then press the button to start, resume and stop tracking the activity.

It was difficult to see what time it was mid-run, or sometimes to see the display at all without pressing the button again during a workout. I often accidentally stopped the monitoring while trying to see the data. On the other hand, after forgetting to start a workout on my Sense, it still accurately recorded that I spent 37 minutes on an elliptical machine. It was easy to see a map of where I rode my bike or ran, and all the data for that exercise after it was completed.

Rest and Relaxation

The most surprising features of the Fitbits are their ability to track your sleeping and help you relax. I had no problem wearing the Sense while sleeping, but others may. Even when I didn’t remember to set it to Sleep mode, it never disturbed me with an ill-timed message since I set my phone to Do Not Disturb.

Tracking My Sleep

After a good night’s sleep — or a bad one — the Fitbit would display a Sleep Score and a breakdown of the time spent awake, as well as in REM, light and deep sleep. Sense also records your skin temperature and oxygen saturation, or SpO2. Lower data points in the latter may be a reason to consult a physician, but the former, I imagine, could be impacted by my electric blanket setting.

Taking a look at my Sleep Score in the Fitbit app.

Sense’s extra sleep data points did not add much to my experience, but it was interesting to see the correlation between how well I slept and how I felt the next day. I admit to getting hooked on sleeping with the watch, to the point where the battery would occasionally die in the middle of the night, since I rarely removed it. Of course, after a quick charge, the watch would report an extremely short sleep, unaware that its battery had been cut short, not my rest itself.

Meditation and Relaxation

Besides sleep, I was surprised to learn how much Fitbit embraces meditation and mindfulness. Charge 4 can guide you through a two-minute breathing exercise, while the Sense has a built-in electrodermal (EDA) sensor that can help you meditate for an extended period and then display the results.

By putting your hand on top of the watch face, the Fitbit applies tiny electrical charges to your skin. That measures how the charges interact with your sweat, which may indicate your body’s response to stress.

Premium members can see their Stress Management Score, which combines a dozen data points — including sleep, exercise and heart-rate variability — to produce a number from one to 100. Just as active users may want to see a higher number of steps recorded to help their physical activity, more sedentary seniors may track their Stress Management Score to achieve higher numbers and, presumably, inner peace.

Tracking my Stress Management Score in the Fitbit app.

Some data points, such as breathing rate and heart-rate variability, are exclusive to Premium members. Members also enjoy personalized recommendations based on their data, workouts, games and challenges, guided programs, advanced sleep analytics, and mindfulness and meditation videos from the world-renowned Deepak Chopra. The more you put into self-logging on Premium, such as recording your water and food intake, the more you’ll get out of it.

Scrolling through Deepak Chopra's mindfulness and meditation videos in the Fitbit app.

Check out my video below to learn how to optimize your health with your Fitbit!

Smartwatch Features

Since Fitbits are worn around the wrist and can display the time, they can easily replace your everyday watch. For those of you who carry a cell phone, some models can replicate the functions of a smartwatch, setting alarms and displaying your texts and emails. Unlike the much-heralded Apple Watch, Fitbits can work in both Android and iOS environments, so they can sync to most smartphones on the market.

Ironically, although I was impressed with how much Fitbits make users want to move, the smartwatch capability I enjoyed most cuts down on moving. Seniors with cell phones may carry them in a purse or a pocket, or they could be across the room when they hear the ding of an incoming message or ring of a call. Is it important or a waste of time? Instead of walking across the room or fumbling to pull your phone from your pocket or purse, you can just glance at your Fitbit, which will tell you the sender or caller. A tap on your watch allows you to see the message and even answer the phone if desired. As someone who receives more than 100 emails a day, wearing a Fitbit makes it so much easier to manage the digital interruptions of life.

Sense also features other apps and can trigger the voice assistants Amazon Alexa and Google Assistant, so you can verbally ask it questions like, “What’s the weather outside?” and see the weather report displayed on the screen.

Fitbit vs. the Competition

There are other popular smartwatches and trackers on the market. Below is a look at some of their features.

Fitbit vs. Apple Watch Series 9

The Apple Watch series offers health tracking and integration with the iOS ecosystem. Apple Watch Series 9 costs $399. The watch can generate an ECG and, like the Fitbit Versa 4, you can share the data with your health-care provider. It also has fall detection and a one-tap SOS button that connects you with local emergency personnel. Plus, it has a sleep-quality tracker, a blood-oxygen sensor, fitness options and a mindfulness app. The battery life, however, is only 18 hours.

Fitbit vs. Samsung Galaxy Watch 6

The Galaxy Watch series provides a full smartwatch experience with fitness tracking, particularly for Android users, and has military-grade durability. Starting at $239.99, the Galaxy Watch 6 has built-in fall detection with emergency contact text alert, SOS button and ECG monitoring. It has up to 40 hours of battery life, and no subscription is required for special health features.

Fitbit vs. Medical Guardian MGMove

MGMove costs $199.95 with a monthly subscription of $39.95 and 24/7 access to Medical Guardian’s monitoring center. It costs $10 a month to add fall detection, texts and alerts are $5 extra per month, and you can add real-time notifications for another $2.99 per month. For $6.99 a month you can add a protection plan. It has up to 24 hours of battery life. Read our MGMove review for more details.

Final Thoughts on Fitbit

Overall, I enjoyed the Fitbits and the gamification of data generated from both moving (exercise) and stationary (sleeping and meditation) activities. When it comes to physical activity and mindfulness, your best competition is yourself. (Senior Olympians, please disregard.) Seeing numbers that reflect your activities makes you want to change them for the better. Fitbits provide the data for tracking and offer pathways to achieve success to move those numbers — and you — in the right direction.

Want a closer look at my experience with Fitbit? Check out the video below!