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Best fitness trackers in 2021: Top activity bands from Fitbit, Garmin and more

best fitness trackers from Fitbit, Garmin and more
(Image credit: Tom's Guide)

The best fitness trackers are good tools for getting more active, getting more sleep and getting more insight on your overall health. They can help you track your progress and offer guidance on how hard you should be pushing yourself, too.

As exercise-oriented wearables, fitness trackers can measure your heart rate, read your blood oxygen levels, accompany you swimming and tell you if you're well-rested. When you're not working out, some can be used to pay for groceries, play music, answer texts and much more.

With so many devices, choosing one of the best fitness trackers or fitness watches for your needs can be tricky. We put dozens to the test, spending hours on the treadmill, running, biking, swimming — even sleeping — to see which excel, and which couldn't make it past the starting block. 

See all of the best fitness trackers and fitness watches below.

What are the best fitness trackers?

We think the best fitness tracker for most people is the Fitbit Charge 4. For $149, it's not all that expensive, and features a built-in GPS and extensive health tracking. The Fitbit Charge 4 also sports improved sleep tracking, wireless payment support and on-device Spotify controls. Plus it's swim-proof and has a bright touchscreen display that responds instantly to swipes and taps. We'd even say, right now, it's still a better pick than the Fitbit Charge 5, which has an ECG monitor and a Daily Readiness Score, but neither are available on the tracker right now. 

Looking for something with more features? The Fitbit Sense is one best fitness trackers that's also one of the best smartwatches. It offers advanced health analysis, a dedicated app store and the Alexa voice assistant on-board. Long story short, it has more features than the Charge line, so it's more comparable to the Apple Watch. We think it's a better overall wellness tool than the Apple Watch, though. 

Check out our guides to the best Fitbit, best Apple Watch and best Garmin watch for more brand-specific buying advice. 

The best fitness trackers you can buy today

The best fitness trackers: Fitbit Charge 4

Fitbit Charge 4 (Image credit: Tom's Guide)

1. Fitbit Charge 4

The best fitness tracker overall

Specifications
Sizes: One size, with S, M, L bands
Battery Life (Rated): 7 days
GPS: Yes
Sleep Tracking: Yes
Reasons to buy
+Accurate, fast GPS+Big community of users+Good design
Reasons to avoid
-No onboard music storage

The Fitbit Charge 4 is our top pick among the best fitness trackers and fitness watches because it introduces the key feature we missed on the Charge 4: GPS. The Charge 4 sync with a smartphone to show you a map of your runs, hikes and other outdoor activities. You'll also see data for pace, elevation, heart rate zones, and calories burned. Even better, the app overlays this information along your route, so you can see what parts of your venture made you huff and puff.

The Charge 4 uses an SpO2 pulse oximeter sensor to better help you understand sleeping patterns, too. Plus the Charge 4 is the first of Fitbit’s fitness trackers to have contactless Fitbit Pay capabilities. If you're looking for a well-rounded wearable with a broad collection of features, this is the one to get. Our Apple Watch Series 3 vs. Fitbit Charge 4 and Fitbit Versa 2 vs. Fitbit Charge 4 face-offs also details the benefits you'll get with a traditional fitness tracker over a smartwatch.

Read our full Fitbit Charge 4 review.

A photo of the Fitbit Charge 5

(Image credit: Future/Tom's Guide)

2. Fitbit Charge 5

The best new Fitness tracker

Specifications
Heart rate monitor: Yes
GPS: Yes
Water resistance: 50 meters
Display: 0.86 X 0.58 inches AMOLED touchscreen
On-board music: No
Mobile payments: Yes
Swim tracking: Yes
Battery life: 7 days/5 hours with GPS
ECG monitor: Yes
Reasons to buy
+Bright, always-on display+Fast connecting GPS+Addition of an ECG monitor
Reasons to avoid
-Daily readiness Score not ready yet-Lack of buttons on the Fitbit makes usability frustrating-No Spotify compatibility

The Fitbit Charge 5 is Fitbit's latest tracker and it has a number of exciting features, usually reserved for Fitbit's more expensive trackers, an ECG heart rate monitor being one. The bright, always-on color touch screen is a massive improvement to that of the Fitbit Charge 4 — it is easy to read in bright sunlight and is great to use during a HIIT workout or on a hike, although we found the lack of physical buttons made it a little fiddly to navigate around when running. 

The main downside with the Fitbit Charge 5 is that two of its main selling points — the ECG heart rate monitor and the 'Daily Readiness Score', which gives you an idea of how ready you are for a big workout, aren't yet available on the tracker. For that reason alone, we wouldn't upgrade from a Fitbit Charge 4 just yet, but if you're using a Fitbit Charge 3 or earlier, the Charge 5 is worth it for the color screen alone. 

Read our full Fitbit Charge 5 review 

Fitbit Sense review

(Image credit: Tom's Guide)

3. Fitbit Sense

The best fitness tracking smartwatch

Specifications
Sizes: 40mm
Battery Life (Rated): 6 days
GPS: Yes
Sleep tracking: Yes
Swim-Proof: Yes
Heart Rate Monitor: Yes
LTE: No
Mobile Payments: Optional, Fitbit Pay
Compatibility: iOS, Android
Reasons to buy
+Attractive+Long battery life+Comprehensive fitness/health features
Reasons to avoid
-No Spotify storage

The Fitbit Sense is the company's top-shelf smartwatch that comes with more advanced health and wellness features that the Versa line. Not only does it have an FDA-approved ECG sensor and blood oxygen reading, but the Sense has the ability to measure electrodermal activity and skin temperature, too.

As one of the best fitness trackers, the Sense works with both iOS and Android, and comes with on-board GPS, a native app store, Alexa and more. No longer is Fitbit just a brand with products for tracking our steps: Fitbit devices like the Fitbit Sense make for excellent smartwatches, too.

Read our full Fitbit Sense review.  

best fitness trackers: Garmin Forerunner 245

Garmin Forerunner 245. Credit: Tom's Guide (Image credit: Future)

4. Garmin Forerunner 245

Best fitness tracker for runners

Specifications
Sizes: One size, with adjustable strap
Battery Life (Rated): 11 hours(using GPS and heart rate)
GPS: Yes
Sleep Tracking: Yes
Swim-Proof: Yes (but no swim-tracking mode)
Heart Rate Monitor: Yes
Reasons to buy
+Accurate GPS and heart-rate monitor+Easy to read in sunlight+Customizable interface+Onboard music storage
Reasons to avoid
-App could be better organized

Garmin makes the best sports watches you can buy, and the Forerunner 245 is one of our favorites. There aren't a lot of bells and whistles, but this running watch is small and light with built-in GPS and a colorful screen that's easy to see in bright sunlight. 

Even better is that the Forerunner 245 has onboard music storage, so you don't need to carry a smartphone with you if you want to listen to tunes while you run. The 245 also calculates your V02 max score and offers a recovery advisor to let you know how long to rest between runs. This watch also lasts for about a week of workouts on a charge, which isn't bad for such a fully-featured GPS watch. However, Garmin's menus, on both the watch and its app, can be a bit confusing.

Read our full Garmin Forerunner 245 review.

Samsung Galaxy Watch 4

(Image credit: Future)

Best fitness tracker with body composition analysis

Specifications
Sizes: One size, with adjustable strap
Battery Life (Rated): 40 hours
GPS: Yes
Sleep Tracking: Yes
Swim-Proof: Yes
Heart Rate Monitor: Yes
Reasons to buy
+First major smartwatch with body composition analysis +Slim design +Bright watch face 
Reasons to avoid
-Concerns with BIA sensor -Battery life can be inconsistent 

Whether you've got a Samsung phone or not, the Samsung Galaxy Watch 4 is an impressive piece of kit for anyone looking to keep track of their health from their wrist. There's a 3-in-1 health sensor for measuring heart rate, taking ECGs and reading body composition - in fact, it's the first major smartwatch to offer bioelectrical impedance analysis (BIA), to help you manage your health goals.  

Even if you're not interested in your body composition, the watch has all you need to track your daily activities, as well as automatic workout-tracking for when you forget to press start. The downside with this watch is the battery life, which we found didn't last the full 40 hours Samsung suggests with GPS and activity tracking on, but unless you're heading out for an ultramarathon, you shouldn't let this put you off. 

Read our full Samsung Galaxy Watch 4 review. 

best fitness trackers: amazfit band 5

(Image credit: Future)

6. Amazfit Band 5

This cheap fitness tracker has Alexa built-in

Specifications
Size: 1.9 x 0.7 x 0.5 inches
Display: 126 x 294 pixels
Battery life: 15 days
Swim-proof: Yes
Sleep tracking: Yes
GPS: No
Heart rate sensor: Yes
Reasons to buy
+Affordable+Lightweight, comfortable design+Actionable sleep tracking
Reasons to avoid
-Display is hard to see in sunlight

The Amazfit Band 5 is a $50 fitness tracker that promises many of the marquee features found in this year’s premium smartwatches, but at a fraction of the price. It has blood oxygen (SpO2) reading, stress monitoring, high heart rate alerts, Amazon Alexa built-in, sleep tracking and several other tools found in high-end offerings.

In our testing, the fitness and sleep tracking on the Amazfit Band 5 were good, not great, but respectable for the low cost while still offering more than other trackers of its price. Better yet, the 15-day battery life meant we didn't need to worry about charging it all the time.

Read our full Amazfit Band 5 review.

best fitness trackers: Amazon Halo

(Image credit: Tom's Guide)

7. Amazon Halo

This fitness tracker offers tone analysis

Specifications
Size: One size
Battery life: 7 days (2 with tone analysis)
GPS: No
Sleep tracking: Yes
Swim-proof: Yes
Heart rate monitor: Yes
Reasons to buy
+Barely-there fit and feel+Excellent companion app+Tone analysis can be fascinating
Reasons to avoid
-Tone analysis zaps battery

As one of the best fitness trackers, Amazon Halo is a both a $99 activity tracker and $3.99 per month service that provides a holistic catalog of health metrics and ‘labs’ for helping you reach wellness goals. Although it’s an in-brand Amazon device, Alexa is surprisingly absent. Instead, the band’s built-in mics listen to how you speak and gauge the emotions you convey based on your tone. You can see how you sound to others, plus how well you sleep and how many activity points you’re banking, in the connected Halo app. 

The Amazon Halo app is also how you capture 3D scans of your body which, using AI, determine your body fat percent and show you with a slider what you might look like with less fat. Plus the large library third-party labs introduce a “choose your own adventure” element to improving your overall wellness. 

Read our full Amazon Halo review.

Amazon also announced the Amazon Halo View is coming soon — here's what we know so far. 

Fitbit Inspire 2

(Image credit: Fitbit)

8. Fitbit Inspire 2

A great fitness tracker for beginners

Specifications
Size: 8.9 x 3.9 x 1.2 inches
Battery life: 10 days
GPS: No
Sleep tracking: Yes
Swim-proof: Yes
Heart rate monitor: Yes
Reasons to buy
+Slim, lightweight design+Accurate sleep-tracking+Affordable
Reasons to avoid
-Small display

The Fitbit Inspire 2 is one of the best Fitbits for those on a budget, as well as one of the best fitness trackers overall. In essence it’s a slimmed-down, slightly stripped-down version of the Charge 3, which makes this ideal for those who are interested in tracking their steps and sleep.

Similar to the Charge 3 and Charge 4, the Inspire 2 has an OLED touchscreen display (though a bit smaller here), a heart rate monitor, smartphone notifications, swim tracking, and sleep-tracking too. One shortcoming of the Inspire HR is that it doesn't have GPS built in, but you’re able to link it to your smartphone and use its GPS to accurately track your outdoor activities, if you so wish.

(Image credit: Future)

9. Garmin Venu Sq

One of the best fitness trackers under $200

Specifications
:
Sizes: One size, with adjustable strap
Battery Life (Rated): 14 hours(using GPS and heart rate)
GPS: Yes
Sleep Tracking: Yes
Swim-Proof: Yes
Heart Rate Monitor: Yes
Reasons to buy
+Great selection of fitness and health features+Accurate, fast GPS+Great battery life
Reasons to avoid
-Limited app selection

The Garmin Venu Sq has several of the features found in the $349 Garmin Venu —including GPS, blood oxygen (SpO2) readings, mobile payments and optional music storage — but at a more accessible price of $199. That's what makes the Venu Sq one of the best fitness trackers you can get for under $200.

It might not be the most attractive watch (though the squircle shape is familiar), but it's certainly capable. The Garmin Venu Sq has GPS, GLONASS, and Galileo satellite-tracking capabilities, as well as the ability to track a variety of gym exercises. It's a good hybrid choice for people who workout both outdoors and indoors.

Read our full Garmin Venu Sq review.

Apple Watch 6

Apple Watch Series 6 (Image credit: Future)

10. Apple Watch Series 6

Best fitness-tracking smartwatch for iPhone users

Specifications
Sizes: 40mm, 44mm
Battery Life (Rated): 18 hours
GPS: Yes
Swim-Proof: Yes
Heart Rate Monitor: Yes
LTE: Optional
Mobile Payments: Apple Pay
Compatibility: iOS
Reasons to buy
+Blood oxygen (SpO2) app+New colorful casings+Brighter always-on display+Faster charging
Reasons to avoid
-Short battery life

The Apple Watch Series 6 isn't the cheapest Apple Watch on the market, but the price is likely to drop in the next few weeks as it is discontinued, following the release of the Apple Watch Series 7. From a fitness tracker perspective, it's a brilliant piece of tech to have on your wrist. We loved the always-on display and the collection of health features, with an even brighter screen and added blood oxygen (SpO2) reader. We even gave it an award in our 2021 Tom's Guide Awards for Health and Fitness.

The watch has 14 different quick-start workout modes, which include running, cycling, walking, and strength training, plus you have the option to add new workouts in the Workout app. Apple also launched Apple Fitness Plus last year, which gives you access to hundreds of workouts. 

The downside with the Apple Watch is the 18-hour battery life, which is a lot less than some of the other trackers on this list. 

If you are thinking of investing in an Apple Watch, it might be worth waiting a few weeks for the Apple Watch Series 7, which will be on sale later this fall. Apple promise that the Apple Watch 7 is the best Apple Watch yet, and while there's no improvement on the battery life, it does boast a brighter screen and faster charging. 

Read our full review of the Apple Watch Series 6

best fitness trackers: fitbit versa 3

(Image credit: Tom's Guide)

11. Fitbit Versa 3

The best fitness tracker for sleep tracking

Specifications
Sizes: One size
Battery Life (Rated): 6 days
GPS: Yes
Sleep Tracking: Yes
Swim-Proof: Yes
Heart Rate Monitor: Yes
Reasons to buy
+Good battery life+Custom training programs (with subscription)+Great sleep analysis
Reasons to avoid
-Can only use one voice assistant at once

The best fitness tracker for sleep tracking is the Fitbit Versa 3, the next-generation of the Fitbit Versa 2. The Versa 3’s standout upgrade is on-board GPS. Now, even when you leave your phone at home, the Versa can (finally) track your location during outdoor exercise. A curvier, larger display is welcome, too. 

Plus the Versa 3 has gained a great motivational workout feature, Active Zone Minutes. Introduced with the Charge 4, Active Zone Minutes monitors the time you spend in the fat burn, cardio or peak heart-rate zones while exercising. Your goal is to earn the AHA’s and WHO’s recommended 150 Active Zone Minutes each week.

Read our full Fitbit Versa 3 review.

best fitness trackers: Garmin Vivoactive 4

Garmin Vivoactive 4. Credit: Tom's Guide (Image credit: Tom's Guide)

12. Garmin Vivoactive 4

A stylish fitness tracker with smartwatch aspirations

Specifications
Sizes: 40, 45 mm
Battery life: 7 days
GPS: Yes
Sleep tracking: Yes
Swim-Proof: Yes
Heart rate monitor: Yes
Reasons to buy
+Comes in two sizes+Built-in music storage with Spotify support+Two-button navigation
Reasons to avoid
-Occasional syncing issues-Convoluted app installation process

While it's one of the most stylish fitness trackers there is, the Garmin Vivoactive 4's attributes are more than skin deep. That's because this device has excellent GPS, a heart rate monitor, sleep tracking, and an NFC chip so you can use it for mobile payments. 

We also liked that the Vivoactive 4 has on-screen animations for workouts including  yoga, Pilates, cardio and strength-training exercises. It also has respiration tracking and a pulse oximeter for tracking blood oxygen saturation levels, as well as on-board music storage. Its estimated battery life of seven days is also pretty good, but that will decrease the more you use GPS.

Read our full Garmin Vivoactive 4 review.

How to choose the best fitness tracker for you

When buying a fitness tracker, you should first evaluate your needs. What do you want to track? If you're only using it at the gym to count your steps and your heart rate, a simpler, less expensive fitness tracker will suit you fine.

If, however, you plan to do more outdoor activities, such as running or biking, you may want a fitness tracker with built-in GPS, so you can more accurately see where you're going, and where you went. Dedicated runners and athletes will want to check out our best GPS watches page, too.

If you plan to use the fitness tracker for swimming, you'll want to make sure it's not only waterproof, but that it can also track your laps in the pool. 

Many of the best smartwatches have fitness-tracking capabilities, too, and have additional features such as responding to text messages and paying for purchases. But there are trade-offs. However, smartwatches as a whole tend to be more expensive and have shorter battery life than dedicated fitness trackers. 

How we test the best fitness trackers

For each new fitness tracker, we evaluate its hardware design and comfort; you need to be able to wear the device all day, and we’ve found that some larger trackers don’t fit well on smaller wrists. If the device has a touchscreen, we look to see how readable it is, especially in bright sunlight. We also examine how easy it is to navigate the fitness trackers' menus; you don't want to have to dig through multiple screens to change your music if you're out running.

We also evaluate features such as step counting and sleep monitoring, distance calculations and when applicable, GPS and heart rate accuracy. And, we see how well a manufacturer's battery life claims hold up in real-world testing. 

Finally, we test how well a device pairs with its companion app, and evaluate the experience of using the two together. We also look to see what features the device's app supports, such as coaching and diet tracking, and if it can sync data with third-party apps, such as MyFitnessPal. 

Get healthy and in shape with our other fitness guides:

Best treadmills | Best exercise bikes | Best adjustable dumbbells | Best home gym equipment | Best yoga mats | Best workout apps | Best running apps | Best sports watches | Best smartwatches | Best smart scales

  • seoguy
    Archived comments are found here: http://www.tomsguide.com/forum/id-2064520/fitness-trackers-2014.html
    Reply
  • yinyang1950
    I was given an UP 2 years ago as a Christmas gift. Started out really liking it until I discovered that it registered movement when I drove my car or rode my motorcycle making it difficult to accurately track my steps. So, stopped using it. I do not see this problem addressed in the reviews. How do these devices handle movement that is not step related?
    Reply
  • walkabouts3
    Love my Misfit Shine: Waterproof, options for wearing location (I hate things on my wrist), attractive, subtle, syncs well with iPhone. No need to charge (watch battery good for 6 months). Sleep tracker. I've been using one continuously for 2 years.
    Reply
  • hunyogo
    been using one continuously for 2 years.
    Reply
  • walkabouts3
    I have been using a Misfit Shine for 2 years and it's fantastic! The magnetic attachment for clothing and optional wrist (or necklace) offer flexibility for wearing. It is waterproof, so I can use it for my daily pool exercise and don't have to worry about being caught in the rain. It is lightweight, attractive, and does not need charging. The app works well. Can't recommend it highly enough. (None of the trackers you mentioned have the combination of attributes that Misfit offers!)
    Reply
  • Laura_38
    Just FYI, the Moov fitness tracker that you reviewed is not the newest version. I dont believe they even offer that any more. The newest edition is call Moov Now and has many more capabilities than the original Moov
    Reply
  • code guy
    17223430 said:
    Fitness tracker bands come in many varieties, but the ‘best’ band is the one that suits your lifestyle. Here are our top picks by category.

    Best Fitness Trackers: Read more

    I watched a special that said the iPhone "health" app, is the most accurate tracker....a little hard to work out with your iPhone while your running.
    Reply
  • ubercake
    I have a MS Band 2. It's one of few out there that has GPS built into it. You don't need to bring your phone on a run or bike ride. It tracks heart rate. It seems to be very accurate with regard to calorie burn. The MS Health dashboard (browser app) has everything you need with summaries and details of all of your activities. Being able to see all of the stats laid out in front of you and your numbers over time can be very motivating. I'm always trying to beat my fastest time or greatest distance.

    The only things I'd like to see if they ever came out with a Band 3 is the ability to store music on it and Bluetooth to some fitness headphones. Further, I'd like it to be fully water-resistant and incorporate swimming workouts/activities. Also, I've found through almost five months of wearing it, the band holds up well, but the contacts you connect the charger to are prone to corrosion from your sweat. Even if you wipe the thing down or clean it really well where the charging contacts are, it still develops corrosion under the seal by the contacts. This results in the contacts not always matching up with the charger. This became a problem resulting in my returning it. I should have the replacement shortly. But you'd expect something called a 'fitness' band which touts water resistance to be able to deal with sweat five days a week. That issue needs to be corrected for sure. If they make the next device water-proof rather than water-resistant, this will probably be a non-issue.

    I think it's pretty cool device, but they should add the improvements and corrections I've suggested to the next iteration.
    Reply
  • TesseractOrion
    I agree Ubercake about the MS Band. Another rumour has said they're phasing it out (no Band 3) which I think would be a shame. I like my version 1 a lot, despite the lumpy aesthetics and terrible charging system... but then I'm in a minority with a Windows 10 phone too..
    Reply
  • Techelle
    I have a FitBit Charge 2 and I love it but the battery life isn't as great as I was hoping it would be.
    Reply