It contains affiliate links and Extrabux will be compensated if you make a purchase after clicking on Extrabux links.


WHOOP 4.0 vs. Oura Ring 3 vs. Fitbit Charge vs. Halo: Which Makes the Best Fitness Tracker?

WHOOP 4.0 vs. Oura Ring 3 vs. Fitbit Charge vs. Halo: Which Makes the Best Fitness Tracker?

    Are you looking to create healthier habits or feel motivated? A fitness tracker is a great tool to get you moving and track metrics such as sleep, steps and your fitness classes. These days, the best fitness trackers can also push you to move more, monitor you heart rate, help you sleep and some can even save your life. Plus, today’s wearables feature smartphone notifications, stress tracking and blood-oxygen metrics, all of which play a pivotal role in your daily life. When it comes to fitness trackers, many people choose between the WHOOP 4.0, Oura Ring 3, Fitbit Charge and Halo. But which one is best for you? To answer the question, we'll compare their price, design, display, battery life, comfort and usability in order to help you find the best fitness tracker.


WHOOP 4.0 vs. Oura Ring 3 vs. Fitbit Charge vs. Halo

WHOOP 4.0 Oura Ring 3Fitbit Charge 5Amazon Halo
Upfront CostFree with Membership$299-$349$99.95$34.99
Recurring Cost$30/Month (less on longer plans)None

6-month membership of Fitbit Premium Unless cancelled, monthly subscription will auto-renew at $9.99/mo

$3.99/Month after 6 Months Free
Battery Life4-5 days per Charge4-7 Days per Chargeup to 4 days1-2 Days with Tone Enabled, Up to 7 Without
Charge Time60-90 Minutes80 Minutes1-2 hours90 Minutes
FittingAdjustable. Can Add Bicep or Half Sleeve Arm Attachments if You Don't Want a Band Style.Need Specific Ring Size and Not Adjustable Once OrderedAdjustable.Comes in small, medium or large but each is adjustable.
Styling OptionsCustomize Colors for Strap, Clasp and Hook. 1,000s of Possible Combinations.5 Core Colors (Black, Gray, Silver, Gold and Diamond Crested (Costs Extra) and 2 Ring Styles to Choose From3 Core Colors (Black / Graphite Stainless Steel, Lunar White / Soft Gold Stainless Steel. Steel Blue / Platinum Stainless Steel3 Core Colors (Black, Gold and Silver)
Sleep Tracking
Body Composition Tracking×××
Voice Tone Tracking×××

WHOOP 4.0 vs. Oura Ring 3 vs. Fitbit Charge vs. Halo: Price and Availability 

WHOOP 4.0 

The Whoop 4.0 itself is free, but you have to pay a subscription of $30/£30 a month, a 12-month membership at $24/£24 a month (plus £288/$288 to start), and an 18-month option at $18/£18.

Oura Ring 3

The Oura ring starts from $299 to $349. The ring comes with a free one-month membership, and after that, it costs $6.99 per month. 

Fitbit Charge 5

Fitbit Charge 5 available for 3 colors, charging for $99.95. Free 6-month membership of Fitbit Premium. Unless cancelled, monthly subscription will auto-renew at $9.99/mo.

Amazon Halo

The Amazon Halo membership is only $3.99/month and the device costs an easy $34.99 and comes with 6 free months of community access.

Where to buy Fitness Tracker?

①You can purchase the fitness tracker from Best Buy, and don't forget to sign up at Extrabux (What is Extrabux?) , then you can get 0.5% super cashback from Extrabux! Sign-Up Bonus: Free to join it & get $20 welcome bonus!

②You can also purchase fitness tracker from places like apple.comAmazonWalmart (up to 4% super cashback), and Target. 

WHOOP 4.0 vs. Oura Ring 3 vs. Fitbit Charge vs. Halo: Design and Display 

WHOOP 4.0 


  • The all-new WHOOP 4.0 is smaller, no screen, smarter, and designed with new biometric tracking, including skin temperature, blood oxygen, and more. Comfortable enough to wear non-stop thanks to new, durable SuperKnit bands, but flexibly designed to be worn off your wrist in new WHOOP Body apparel.

  • You can wear it around the wrist, forearm, or bicep, or in compatible gym kit (Whoop body). There are a large number of color options to choose from when it comes to the strap and device itself. 

  • The Whoop 4.0 sensor contains five LEDs (three green, one red, and one infrared), four photodiodes, and advanced algorithms for more accurate heart rate tracking. Similar to Oura, it also tracks heart rate variability, blood oxygen and skin temperature.

  • Whoop is meant to be worn 24/7 and has a five-day battery. Whoop has a smart “on-the-wrist” charging approach, so battery life is rarely a concern. Just slide on the battery pack whenever you need juice and it charges while you wear it. If you don’t want to have the battery pack attached to your wrist, change Whoop off your wrist.

Oura Ring 3


  • The Oura ring is a smart ring, designed to be worn on your index finger on your non-dominant hand (to avoid getting the ring scratched). Before ordering your ring, Oura will send you a sizing kit so you can get the right size — you should wear the plastic dummy ring for at least 24 hours, keeping it on overnight to ensure you get the right size. The ring shouldn’t rotate on your finger as you go about your day. 

  • The ring has green and red LED sensors — the green monitor your heart rate throughout the day, and the red track your blood oxygen. The ring can also track your heart rate variability (measuring stress), respiratory rate and body temperature. In the third generation Oura ring, which is completely round, there are five different finishes to choose from — silver, black, stealth, gold, and rose gold.

  • Unlike adjustable wrist wearables, Oura can’t be adjusted. Oura can be worn on the pointer, middle, or ring finger. Hopefully, at least one finger will provide a nice fit at all times even if your fingers change in size due to a weight change.

  • Because Oura isn’t ideal for activity tracking, lots of people in the community wear it for sleep exclusively. If you’ve got another device to track activity, there’s almost no advantage to wearing Oura during the day. If you opt to wear Oura during the day, it gets in the way for certain workouts, like lifting weights, where it’ll be prone to scratching too. You’ll have to monitor and manage its five-day battery life as well.

Fitbit Charge 5


  • The Fitbit Charge 5 is available in three colorways: black with graphite stainless steel, lunar white with soft gold stainless steel, and steel blue with platinum stainless steel. Additional bands are sold separately, including a perforated strap designed for better breathability during sports.

  • The Fitbit Charge 5 has a full color AMOLED display. It’s crisp and bright, with smooth scrolling and animations. There’s an always-on option that makes it easier to see the screen at a glance, but we found in unnecessary in everyday use; unlike other fitness trackers, the Charge 5’s display woke reliably whenever we raised our wrist to check the time.

  • The Fitbit Charge 5 has no physical buttons, but there’s an oval sensor on each side of the case for the watch’s ECG and EDA apps. On the rear of the watch you’ll find the usual optical heart rate sensor, plus the contacts for the charger. 

Amazon Halo


  • The Amazon Halo has a simple design with a woven fabric band and screenless tracker unit that is reminiscent of the older Fitbits. It has a single button that interacts with the Halo app, two microphones for voice analysis, and an LED indicator. On the bottom are an optical heart rate sensor and a charging area. Keeping with its no-fuss design, you can charge the tracker without removing it from the band.

  • The tracker unit is slim and mounts underneath the band with the heart rate sensor flush against your skin. The tracker snaps securely onto the band, but it can be removed quickly and easily when you need to swap bands. The sensor unit is waterproof down to 50-meters, so you can swim and shower while wearing it.

  • The band is made of a strong mesh with a velcro clasp. The velcro on the Halo is just perfect.  I can pull the velcro as tight as I need and don’t have to fuss with the different settings of a buckle.  The mesh fabric is not as silky smooth as silicone bands but is still comfortable against your skin even when you are sweaty. If you don’t like the mesh, Amazon does sell a sports band with a more rubbery feel. The Halo doesn’t have a screen to grab your attention or a vibrating motor to buzz you constantly.

WHOOP 4.0 vs. Oura Ring 3 vs. Fitbit Charge vs. HaloFitness Tracking

WHOOP 4.0 

Track your daily behaviors like diet type, stress levels, caffeine intake, and more to understand which behaviors impact sleep and recovery most.


  • WHOOP monitors your sleep cycles, debt, performance, and quality, to help you know how much sleep you need every night.


  • WHOOP measures and accumulates your training activities and daily effort with a Strain score that helps you understand when to rest or push.


  • WHOOP analyzes your key metrics like HRV and resting heart rate to determine a daily recovery score, and shows you how specific lifestyle and training behaviors affect Recovery.


  • WHOOP now measures your blood oxygen levels, skin temperature, heart rate, and more, so you can see when you’re making progress, or when something’s off your baseline.

Oura Ring 3

Sleep, Readiness & Activity scores are just the beginning. Members also get:

  • In-depth sleep analysis every morning

  • Personalized health insights & recommendations

  • Live & accurate heart rate monitoring

  • Skin temperature readings as a tool for early sickness detection & period prediction

Fitbit Charge 5

The Fitbit Charge 5 has a ton of fitness features. It also tracks your steps, sleep, and stress, and has onboard GPS for any distance-based workouts.

Amazon Halo

Halo members have full access to their ever-expanding suite of tools, features, and programs including Body composition and Tone. Non-members can still use the Amazon Halo Band and Halo app to access basic features like steps, heart rate, sleep time, and sleep tracking.

WHOOP 4.0 vs. Oura Ring 3 vs. Fitbit Charge vs. Halo: Battery Life

WHOOP 4.0 

Get continuous data for days on a single charge with the waterproof battery pack that’s designed to charge your WHOOP while you’re wearing it.


Never miss a moment of data. This battery pack is designed to charge your WHOOP while you’re wearing it for truly 24/7 data collection. Provides up to 5 days of usage on a single charge.

Oura Ring 3

On average, a fully charged ring will last up to 7 days. This can vary depending on several factors, such as the age of your ring, how often you make use of daytime features, and if you take naps throughout your day.

Fitbit Charge 5

Charge 5 has a battery life of up to 4 days. If you use built-in GPS continuously, Charge 5 has a battery life of up to 5 hours, Ionic has a battery life of up to 10 hours. 

Amazon Halo

Amazon includes a charging clip that powers the Halo in less than 90 minutes. Amazon says it gets up to seven days of battery life with the Tone feature disabled, and up to two days with it enabled.

WHOOP 4.0 vs. Oura Ring 3 vs. Fitbit Charge vs. Halo: Verdict 

When deciding to buy a fitness tracker, the best fitness tracker really depends on what you’re hoping to get from it. The Oura ring is discrete enough to wear to the office, is fantastic for sleep and recovery data, and has an easy to understand app, that’ll help you make positive changes to your life. 

On the other hand, The Whoop 4.0, Fitbit Charge, and Halo are better at fitness-focused data recording. There are some subtle differences between The Whoop 4.0, Fitbit Charge, and Halo, and which one to choose depends on personal preference.

WHOOP 4.0 Pros & Cons

  • Tracks blood oxygen saturation and body temperature

  • Innacurate heart rate readings and workout tracking in testing

  • Haptic alarms

  • Can irritate skin

  • Offers weekly and monthly performance assessments

  • Requires pricey membership

  • Waterproof, highly portable charger

  • Knit bands take a long time to dry

  • No display

  • Mediocre battery life

Oura Ring 3 Pros & Cons

  • Comfortable to wear day and night

  • Can be bulky during certain types of exercise

  • Syncs with Apple Health and Google Fit for more accurate data

  • Ring material is not flexible and does not adjust for changes in finger size

  • Battery lasts 7 days

  • Data not available directly on device, like a watch

  • Completely waterproof and can survive extreme temperatures

  • Doesn’t track type of workout, must be synced with another device

Fitbit Charge Pros & Cons

Pros Cons
  • Lovely OLED display

  • Exercise options could be expanded

  • Solid performance

  • Daily Readiness score needs Fitbit Premium

  • Built-in GPS

  • Clock faces aren't customizable

  • Tracks overnight HRV, breathing rate, SpO2 and skin temperature variations

  • No altimeter for elevation tracking

  • Supports mobile payments

  • No physical buttons

  • Screen feels too small

Amazon Halo Pros & Cons

  • Slim, lightweight design

  • Subscription to access all features

  • Informative Sleep score

  • Questionable privacy

  • Accurate body fat scan

  • Lab integration

2022-12-09 01:07635