WHOOP vs. Apple Watch

Last Updated: Oct 05, 2021

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I’ve been wearing an Apple Watch since April 2015, and a WHOOP strap since January 2019. This article provides an in-depth comparison and explains which of these wearable devices is the better fitness, sleep and recovery tracker based on my extensive experience.

While some of the information in this article is applicable to older versions of the Apple Watch and WHOOP strap, I’ll be specifically comparing the Apple Watch Series 5 and Series 6 with the WHOOP strap 3.0.

Note: WHOOP just released the WHOOP Strap 4.0 and I’ll update this article once I’ve received mine in the mail and had a chance to collect some data points.

I highly recommend that you read the entire article to get a complete picture of how these two devices stack up, but here’s a quick side-by-side comparison table that illustrates the major differences.

Apple WatchWHOOP
Workout tracking
Automatic workout detection
Calorie tracking
Support for chest straps (HR)
HR broadcasting
Guided workouts
Strain tracking
Sleep tracking
Sleep stage analysis
Sleep quality score
Recovery score
Battery life16 to 28 hours5 days
Pricing$399 to $799$18 to $30 per month
WHOOP vs. Apple Watch comparison table.

As you can see, the Apple Watch and WHOOP strap have several features in common. However, there are also significant differences between these two devices, making a direct comparison difficult. 

Apple Watch Series 6 vs. WHOOP Strap 3.0

The Apple Watch 6 is first and foremost a wristwatch. At the same time, you can clearly see that Apple has a vested interest in health and fitness, as reflected in such features as activity and calorie tracking, as well as its Fitness+ platform (which offers dozens of guided workouts).

The WHOOP strap, on the other hand, doesn’t try to be the Swiss Army knife of wearables. It’s a highly-specialized fitness tracker that provides deep insights into what your body is trying to tell you.

These insights are unmatched by any other fitness wearable I’ve tried.

That makes a direct side-by-side comparison difficult. As a result, the rest of this article will focus only on features that are pertinent to activity, sleep and recovery tracking; I won’t talk at length about the fact that the Apple Watch has a screen, can make phone calls, and can send text messages — features that are largely irrelevant from a health perspective.

On the flip side, it’s those “extras” that are the reason why I’ve been wearing an Apple Watch in addition to a WHOOP strap for the past several years. But hang tight, as we’ll get to that!

For now, let’s take a deep dive into the fitness tracking features of each device to see how they stack up against each other.

Activity and Workout Tracking

WHOOP activity tracking (left) vs. Apple Watch (right).
WHOOP activity tracking (left) vs. Apple Watch (right).

Both wearables do a good job of recognizing and tracking different types of physical activity. For example, the last time I walked from the security area of the Atlanta airport to Terminal F (a 20-minute walk), my Apple Watch asked me if I’d like to start tracking an indoor walk. Plus, it had already captured every step I had taken since I sped up my pace (right after going through security). 

On another occasion, I swam a few laps in our previous home’s community pool. The Apple Watch recognized that I was swimming and started tracking a workout while counting my laps.

WHOOP, on the other hand, detected I was doing manual labor when I built our first chicken coop early in 2021. Additionally, WHOOP automatically recognizes many of my functional workouts (CrossFit) that last longer than 15 minutes.

The latter is key for both devices to detect and log workouts; the workouts have to be long enough and raise your heart rate above a certain threshold in order to be recognized. The exact threshold varies by device and the type of workout you’re performing. 

For example, WHOOP recognizes physical activity as a workout if your heart rate is elevated for longer than 15 minutes and the activity resulted in a metabolic strain score of 8 or above. (We’ll talk about what the strain score is in a bit, so stay tuned). 

Here’s an overview table that compares the activity and workout tracking features of both devices side-by-side.

Apple WatchWHOOP
Automatic workout detectionRunning, walking, swimming, elliptical workouts, rowing.Detects all previously-logged workout types
Number of workout types1687
Workout detection thresholdVaries depending on the type of workout15 minutes and a minimum strain score of 8
Scoring modelActive minutesMetabolic strain
Active calorie tracking
Step counting
HR broadcasting
External HR monitor (chest strap) support
RecommendationsExercise remindersStrain coach, sleep coach
Post-workout analysisRaw metricsMetrics and recommendations
CommunityAwards and activity sharingTeams
The activity tracking capabilities of WHOOP and Apple Watch.

One thing I like about WHOOP is that the company adds to its already long list of known workout types every couple of months. As of this writing, you can choose from 87 different types of workouts in the WHOOP app. 

Activities WHOOP can automatically detect
WHOOP can detect common activities from playing baseball to napping.

The cool thing about WHOOP is that it learns from the type of workout you do. That means that if WHOOP detects physical activity, but can’t categorize it correctly, it logs it as “Other.” If you decide to change “Other” to the type of workout you performed (e.g., skating), WHOOP remembers the workout, its length and its HR pattern in order to automatically detect future skating workouts. 

So WHOOP can theoretically detect all 87 types of workouts it has in its database.

Apple Watch only has 16 workouts to choose from, and it can only detect five of those. Plus, Apple only adds new types of workouts once a year (along with each new version of watchOS).

How Apple Watch and WHOOP Score Workouts

Unless you add a workout manually, Apple Watch keeps tabs on your activity minutes, which count towards your chosen exercise and movement goals. Apple defines activity minutes as the time you spend in an elevated heart rate zone, and says that “every full minute of movement that equals or exceeds the intensity of a brisk walk counts toward your daily Exercise and Move goals.”

WHOOP has a much more sophisticated approach, tracking the strain you put on your cardiovascular system based on the following formula: 

(Resting heart rate + 0.3 * (Max. heart rate-resting heart rate)).

In other words, WHOOP calculates your heart rate reserve, which is the difference between your maximum heart rate and your resting heart rate. If an activity elevates your heart rate to 30% of your reserve, it adds to your strain.

Here’s an example based on my personal heart rate data:

  • Resting heart rate: 41 bpm
  • Maximum heart rate: 190 bpm
  • Heart rate reserve: 149 bpm
  • Activity detection threshold: 85.7 bpm

As the numbers above indicate, I’ll only accumulate strain in the WHOOP app if my heart rate goes above 86 beats per minute. So if I sit in front of my computer all morning, I might end up with zero strain by noon. 

I think both the Apple and WHOOP approach to gathering and quantifying physical activity are reasonable. But Apple’s is geared more towards the average consumer, whereas WHOOP’s implementation is geared more towards fitness enthusiasts and serious athletes. 

Personally, I don’t care about either health metric because I follow a set workout routine that produces my desired results. My wife, on the other hand, is trying to improve her cardiovascular fitness and thus pays more attention to her strain scores as reported by WHOOP. 

Calorie Tracking

WHOOP's calorie tracking dashboard
WHOOP’s calorie tracking dashboard.

As I mentioned in my WHOOP Strap 3.0 review and the accompanying WHOOP video review, tracking calorie burn is futile without knowing your basal metabolic rate (BMR), which is the amount of energy needed for basic bodily functions (i.e., for survival) while resting in a temperate environment when the digestive system is inactive. 

In other words, if you don’t tell your activity tracker what your BMR is, the device has to estimate it based on your height, weight and gender. This makes calculating how many calories you burn challenging and ultimately inaccurate. That’s why I recommend taking the calorie burn as reported by any activity tracker with a grain of salt. 

However, I’ve read that WHOOP is working with PNOE, a company that makes metabolic analysis devices and software, to enable users to provide cardio-metabolic data (such as BMR), in order to make the device’s calorie tracking more accurate and effective. While that integration hasn’t materialized yet, I’m looking forward to giving it a try if and when it becomes available. 

Step Counting

Apple Watch tracks calories, exercise minutes, standing minutes and steps.
Apple Watch tracks calories, exercise minutes, standing minutes and steps.

Counting steps is a common feature among many fitness trackers, but I’m not convinced of its value. 

Our ancestors and early humans walked in search of food, so I consider walking more valuable than jogging from a health and longevity perspective (because it mimics the activity patterns of our ancestors). 

I also believe that performing high-intensity workouts (such as CrossFit) that might only last 15-30 minutes is an excellent biohack to achieve the same or better fitness results without taking 10,000 steps per day.

Case in point: I rarely log more than 7,000 steps per day, but I still accumulate significant muscular and cardiovascular strain.

So personally, I don’t get too hung up on my daily steps as recorded by my Apple Watch, and I don’t mind that WHOOP does not track this metric. At the same time, I can see how being able to keep tabs on step count could be beneficial for people who don’t work out in a gym setting and just want to stay active by walking or hiking.

HR Broadcasting and Support for Chest Straps

The WHOOP app allows you to broadcast your heart rate (as recorded by the WHOOP strap) in real-time to other applications or devices using the Bluetooth LE protocol. That’s useful if you want to use another app to track your workouts. For example, if you want to go for a bike ride and use the Strava app to record it, you can stream heart rate data from WHOOP to Strava.

I used WHOOP’s HR broadcasting feature when I wrote my article about the accuracy of WHOOP in comparison to the Apple Watch and chest straps. It’s fairly simple to set up and it allowed me to capture WHOOP’s heart rate data using a third-party app, from which I could export everything as an Excel spreadsheet for further analysis.

On the other end of the spectrum is using a third-party device (such as a chest strap) to receive heart rate data, rather than using the optical HR sensor built into the tracker. 

Unfortunately, WHOOP doesn’t support external heart rate sensors — a fact that has potential implications on its accuracy during certain types of workouts. I’ll briefly touch on these implications later, but recommend you read this article for an in-depth analysis.

Apple Watch supports the use of chest straps in lieu of its own HR sensor, but it doesn’t support HR broadcasting. Personally, I’d prefer if WHOOP supported chest straps instead of offering HR broadcasting because I don’t use third-party apps for workout tracking and would get more value out of the better accuracy that chest straps provide for CrossFit workouts.

That’s because while I don’t particularly care about strain tracking in general (as noted earlier), I wouldn’t mind having access to a clearer picture of my HR pattern during HIIT workouts. I’m specifically interested in getting an accurate picture of how fast my heart beats during certain short but super-intensive workouts that push me to my physical limits.

Workout Recommendations

WHOOP’s strain coach can guide you based on your recovery and sleep scores.
WHOOP’s strain coach can guide you based on your recovery and sleep scores.

WHOOP offers a feature called Strain Coach, which uses historical data (e.g., your recovery score and last night’s sleep) to recommend the cardiovascular strain you should accumulate on a given day to either facilitate recovery or fitness gains. 

I don’t get too hung up on Strain Coach’s recommendations, but I use some of the same data points (specifically, my recovery score and my sleep performance) as the basis of my decision-making when it comes to how hard I should push myself during a workout. 

In addition to the raw numbers, I also take into account how I feel on a given day. It doesn’t happen very often, but sometimes I feel better than my biometrics suggest (and occasionally the opposite is true). 

Plus, I usually plan several days in advance. For example, if I know that I have a tough workout coming up soon, I might lay low for a few days leading up to that workout — even when I have a high recovery score in WHOOP and slept well the night before (suggesting that I could push harder).

Apple Watch doesn’t offer any of this information; it simply reminds you if you haven’t tracked as many “exercise minutes” as on previous days, that you should stand up for a minute if you’ve been sitting for too long, or that it’s time to take a few deep breaths (which can help you relax and positively influence your heart rate variability).

Post-Workout Analysis

WHOOP's post-workout analysis
An example of WHOOP’s post-workout analysis.

Apple Watch offers some very basic post-workout analysis via the iPhone’s native Fitness app, which shows a list of logged workouts. If you drill down to specific workouts, you can see such metrics as:

  • Type of workout
  • Workout time
  • Active and total calories
  • Average heart rate
  • Heart rate graph
  • Weather and route (for runs or bike rides)
  • Heart rate recovery graph

In theory, that last metric (heart rate recovery) is one of the few meaningful metrics Apple provides. Unfortunately, it’s less so in practice. 

The quicker your heart rate recovers to baseline after ending a workout, the better your cardiovascular fitness is. But Apple doesn’t give you any indication of what your particular heart rate recovery numbers mean, such as whether they’ve improved over time. So although the number can be viewed as a general proxy for your overall fitness, it’s not actionable in the sense that you can use it to measure the effectiveness of your workouts or guide your workout decisions.

Apple Watch's heart rate recovery doesn't tell you what these numbers mean
Apple Watch’s heart rate recovery data doesn’t tell you what these numbers mean.

So as far as I’m concerned, Apple’s post-workout analytics are relatively useless. I never bother looking at them since they don’t provide any meaningful insights or recommendations.

WHOOP’s post-workout analytics are much more sophisticated. And more importantly, they offer information I can use to make changes going forward.

For example, during one of my last CrossFit workouts, WHOOP reported that (based on my HR data) I was burning fat and building endurance, and that I should spend 22 minutes at 60-70% of my max HR (which is seven minutes more than what I usually spend in this HR zone during CrossFit workouts).

WHOOP can fine-tune future recommendations based on the feedback you provide
WHOOP can fine-tune future recommendations based on the feedback you provide.

WHOOP also gives me the opportunity to rate the perceived exertion and performance level of each workout, and whether or not I was able to complete it. If I wasn’t, I can tell the app whether that was because of an injury or because I became fatigued. WHOOP uses this input to tweak its future recommendations.

Sleep Coaching and Tracking

WHOOP sleep analysis (left) vs. Apple Watch (right).
WHOOP sleep analysis (left) vs. Apple Watch (right).
Apple WatchWHOOP
Sleep goalsManualCalculated
Total time asleep
Sleep efficiency
Detailed sleep stage tracking
Respiratory rateComing with watchOS 8
Sleep improvement recommendationsNotifies you to start winding down, dims the screenRecommends a bedtime and total sleep need
Analytics and correlations
Wind down recommendations
A comparison of the sleep tracking capabilities of WHOOP and Apple Watch.

Tracking sleep is arguably one of the most important features of a fitness tracker — at least for me. That’s because the quality of my sleep plays a major role in how the rest of my day goes, including how hard I can push myself during a workout. 

Case in point: the night before writing this article, I didn’t sleep well and decided to skip that day’s workout (even though I was looking forward to wearing my 20-pound weight vest in preparation for the annual Murph Challenge).

I don’t need a sleep tracker to tell me that I had a poor night’s sleep. However, I closely monitor how the choices I make during the day (such as my food intake, exercise, caffeine and alcohol consumption) impact my sleep quality. 

To quantify this, I need a fitness (sleep) tracker that can accurately detect the various stages of sleep, including light, deep (or slow-wave) and REM sleep. As I mentioned in my article about the best sleep trackers, most devices (including Apple Watch) fall short in accurately detecting deep and REM sleep. 

When Apple announced that it had made improvements to the sleep tracking capabilities of the Apple Watch Series 6 and watchOS 7, I got super excited and had high hopes — especially in light of their acquisition of Beddit, a sleep tracking technology company. Unfortunately, those hopes were crushed when the company revealed the details of the new Apple Watch’s sleep tracking abilities. 

In fact, Apple didn’t introduce any new sleep tracking features at all; it just made the previously-available “Bedtime” feature slightly less useless.

The dashboard for setting a bedtime schedule in Apple Watch.
The dashboard for setting a bedtime schedule in Apple Watch.

So here’s where we stand with sleep tracking/coaching and the Apple Watch Series 6 + watchOS 7:

  • Track total time asleep
  • Bedtime and wind down reminders
  • Bedtime, wake up and sleep consistency reporting
  • Silent (haptic) alarms
  • Automatic display dimming and locking at bedtime

I would argue that the native sleep tracking capabilities of the Apple Watch are borderline useless. They’re certainly better than no sleep tracking at all, but nothing more.

Respiratory rate tracking in watchOS 8
Respiratory rate tracking in watchOS 8.

Update: Apple announced that respiratory rate tracking will come with watchOS 8 in the fall of 2021. I’ll make sure to update this article once the new Apple Watch and watchOS 8 have been released.

The somewhat good news is that there are third-party sleep tracking apps for the Apple Watch that aim to fill the gaps left by watchOS. I’ve tried many of these apps and have come to the conclusion that the combination of the watch’s lack of sensors, a low sampling frequency and inadequate battery life prevent these apps from offering meaningful insights into sleep quality.

WHOOP, on the other hand, is one of the most accurate sleep trackers on the market. 

The driving factor behind WHOOP’s ability to accurately detect sleep stages is the presence of a series of advanced sensors, including:

  • Heart rate sensor
  • Accelerometer
  • Skin conductance (electrodermal activity) sensor
  • Ambient temperature sensor

In comparison, Apple Watch can only use data from its heart rate sensor and accelerometer to figure out whether you’re sleeping or not. And that data is simply not sufficient for differentiating between light and REM sleep (for example).

WHOOP’s second advantage over Apple Watch is its higher sampling frequency. 

WHOOP measures your biometrics 100 times per second, whereas Apple Watch samples data only once every few minutes (unless you’re in workout mode).

Finally, WHOOP’s battery lasts for several days whereas the Apple Watch doesn’t even last a full 24 hours (making it necessary to strategically charge the battery so it won’t run out overnight).

Aside from these differences in raw sleep metrics, WHOOP also offers relevant bedtime recommendations based on the strain you’ve accumulated during the day and any sleep debt you might carry from previous nights.

Additionally, WHOOP correlates lifestyle choices (such as alcohol consumption) with changes in sleep quality. That enables you to make changes to your lifestyle in order to facilitate better sleep and recovery.

In contrast, Apple Watch only keeps tabs on your sleep consistency (bed and wake time). Those are important metrics that can directly influence your circadian rhythm and the quality of your sleep, but without the ability to track deep and REM sleep, the device doesn’t even come close to what the WHOOP strap offers.

Recovery Score

WHOOP provides you with an easy-to-understand recovery score every morning.
WHOOP provides you with an easy-to-understand recovery score every morning.

Heart rate variability (HRV) is an indirect indicator of the balance between the two branches of your nervous system — the sympathetic branch and the parasympathetic branch.

The sympathetic branch is responsible for the fight or flight response, and the parasympathetic branch is responsible for resting and digesting. What’s interesting is that both branches are in constant competition, leading to measurable differences (in milliseconds) in timing between heartbeats.

As a result, high HRV (as compared to your baseline) is an indication of a balanced nervous system that can effectively deal with strain and stress. On the other hand, low HRV is an indication that the sympathetic branch of your nervous system has taken over due to stress, injury, exertion or other factors.

I’m highlighting all of this because HRV, combined with your resting heart rate and sleep data, can give you a very good indication of how recovered your body is (and thus how capable it is of taking on strain). 

WHOOP measures the metrics discussed above while you’re sleeping in order to calculate your daily recovery score. (Technically, HRV is measured during deep sleep to avoid any external influence.) It’s an incredibly powerful metric that can help you make decisions during the day.

A high HRV, compared to your baseline, is a sign that your body is recovered.
A high HRV, compared to your baseline, is a sign that your body is recovered.

For example, if my body is run down due to a week of intense physical activity and stress, and I wake up with a low recovery score, I might want to take it easy that day instead of doing my first solo skydive or attempting to beat my maximum push-up score.

But here’s where it gets interesting!

Instead of merely telling you what your recovery score is the next day (on a scale from 0 to 100), WHOOP asks you a number of questions (you can pick and choose what questions you want to be asked). WHOOP then correlates your answers with changes to your recovery score. At the end of each week and month, you get a personalized performance assessment that shows you how the answers you provided correlate with your sleep and recovery metrics.

A screenshot from WHOOP's weekly performance assessment.
One screen from WHOOP’s weekly performance assessment.

For example, if WHOOP detects a correlation between consuming alcohol and lower recovery scores, the app will tell you. WHOOP calls this the Journal, and I’ve written about how I use it in this article

In a nutshell, the WHOOP Journal helps you correlate lifestyle choices with changes in your HRV, your resting heart rate, your recovery score and your quality of sleep. That’s an incredibly powerful tool that can help you optimize your sleep and recovery. 

A snapshot from WHOOP's monthly performance assessment.
A snapshot from WHOOP’s monthly performance assessment.

This recovery tracking capability is one of the reasons why I’ve been wearing the WHOOP band since early 2019. No other fitness tracker I’ve seen so far comes even close to what WHOOP offers with its Journal feature — not even Biostrap and Oura Ring

Hardware and Sensors

The WHOOP strap's heart rate monitor.
The WHOOP strap’s heart rate monitor.
Apple WatchWHOOP
3D accelerometer and gyroscope
Optical heart rate sensorMix of green, red and infrared LEDs*Green LEDs
NTC (negative thermal coefficient) body temperature sensor
Electrodermal activity (skin conductance) sensor
Sampling rateVaries (see below)100x per second
Interchangeable straps
Electrocardiogram (ECG)
*The Apple Watch Series 5 uses only green LEDs, much like the WHOOP strap.

Before the Apple Watch Series 6 was introduced, Apple relied on photoplethysmography (PPG) sensors with green LEDs — the most popular optical heart rate sensors. But with the introduction of Series 6, Apple added red and infrared LEDs to be able to measure a person’s blood oxygen saturation. 

I wrote about the pros and cons of green and red LEDs in my Biostrap vs. WHOOP comparison article, so I won’t go into the details between those technologies again. 

But in a nutshell, green LEDs don’t penetrate the tissue as deeply as red LEDs, but are better and more accurate when there is motion involved (such as during a workout). 

Red and infrared LEDs can penetrate the skin deeper, and thus enable features such as blood oxygen monitoring. But they’re prone to motion artifacts and are thus not ideal for tracking heart rate data during workouts.

The Apple Watch Series 5 uses only green LEDs.
The Apple Watch Series 5 uses only green LEDs.

However, it’s worth noting that while the Apple Watch Series 6 features a combination of green, red and infrared LEDs, they’re not used simultaneously. 

Instead, the device relies solely on green LEDs for measuring your heart rate during workouts — which explains why my wife’s WHOOP strap and mine both show almost identical heart rate data during workouts (compared to our respective Apple Watches).

So when does the Apple Watch use its red and infrared LEDs? It turns out that the Apple Watch only uses its infrared LEDs for capturing heart rate data in the background throughout the day (and when the accelerometer doesn’t detect a lot of movement). 

That’s because readings based on infrared LEDs are less reliable (due to a higher signal-to-noise ratio) when there is movement involved. 

On the other hand, red LEDs are used when you perform an ad-hoc blood oxygen saturation scan. You can learn more about how the Apple Watch monitors your heart rate in this knowledge base article.


Based on my experience over the past several years and the accuracy experiment I conducted a while back, I’d say that both Apple Watch and WHOOP offer comparable heart rate monitoring accuracy.

I think that’s because both devices use the same sensor technology (photoplethysmography), the same type of LEDs (during workouts), and likely a similar algorithm that translates the light signal the sensor receives into heart rate data.

That said, all wrist-worn heart rate sensors have limitations when it comes to accurately capturing heart rate data, especially in situations when there’s a lot of wrist movement involved. 

In other words, if the sensor isn’t in constant contact with the skin (e.g., it’s sliding back and forth), the light receptors in the sensor can’t accurately interpret the light that’s reflected from the blood vessels in your skin. When that happens, the sensor cannot determine your heart rate and you’ll have gaps in the recorded heart rate data. 

That’s a problem because these gaps might mean the readings fail to include sudden spikes or drops in heart rate, like the type that frequently occur during high-intensity workouts such as CrossFit. 

That’s why all wrist-worn devices (that I’ve tested) work better for workouts that involve constant movement patterns (such as running, biking or rowing) where your heart rate is unlikely to fluctuate dramatically.

That’s why many professional athletes who rely on highly accurate heart rate data during workouts use chest straps. 

Apple Watch is compatible with chest straps, while WHOOP is not.

Sampling Rate

Although the Apple Watch has a relatively high sampling rate of hundreds of times per second, the heart rate sensor is never on for more than a few seconds at a time.

In other words, the Apple Watch only measures your heart rate several times a day, at intervals that depend on your movement pattern and other factors that Apple hasn’t disclosed. Additionally, Apple Watch only measures your heart rate continuously during workouts, and for three minutes after a workout has ended (to determine your HR recovery rate).

WHOOP measures your heart rate 24/7 and at a sampling rate of 100 times per second. As a result, WHOOP can more reliably calculate the cardiovascular strain you accumulate throughout the day. This constant monitoring also enables more reliable sleep tracking.


I prefer the Sport Loop over the Solo Loop for my Apple Watch.
I prefer the Sport Loop over the Solo Loop for my Apple Watch.

The strap is arguably the most important accessory to ensure a proper fit. That’s why both the Apple Watch and WHOOP offer various styles of straps, which you can choose from based on your personal preferences and needs.

In my opinion, the absolute best strap for the Apple Watch is the Sport Loop. It’s incredibly comfortable, it dries quickly, and you can adjust it to achieve just the right fit.

When Apple announced the Apple Watch 6, the company also released a new strap called the Solo Loop. I got pretty excited about it in the beginning, but after learning that it stretches over time, I would no longer recommend it as your primary strap for working out. 

Additionally, I’ve come to the conclusion that most of the cheaper knockoffs of the Sport Loop don’t hold up as well as Apple’s first-party straps. However, if you want to learn more about alternatives to Apple’s fitness straps, check out this sports straps comparison article that I wrote a while back.

I love my Baseknit strap because it ensures that the sensor stays in close contact with my skin.
I love my BaseKnit strap because it ensures that the sensor stays in close contact with my skin.

As far as the WHOOP strap is concerned, I’m a huge fan of both the ProKnit and BaseKnit bands because they also offer excellent performance as far as fit and comfort are concerned. 

The cool thing about WHOOP is that you can get longer versions of the ProKnit bands that fit over your forearm or biceps if you don’t want to wear WHOOP on your wrist.

I have several ProKnit bands for my WHOOP but I’m currently wearing a BaseKnit band and I’m super happy with it.


Apple's Fitness+ platform features a ton of workouts you can do at home.
Apple’s Fitness+ platform features a ton of workouts you can do at home.

Apple offers two separate apps to interact with its wearable: the Watch app and the Fitness app. You can use the former to configure and customize your watch and the latter to gain limited insights into your fitness data.

As of watchOS 7, the Fitness app has only very basic functionality, such as showing how many activity, exercise and standing minutes you’ve accumulated during the day, and providing a list of the last couple of workouts. 

In fact, the Fitness app offers only a single screen that shows you a little bit of activity-related data. This includes your daily movement, exercise and standing goals; a list of recent workouts; activity trends; and recent awards.

From the summary screen, you can drill down into specific workouts to see all the metrics your Apple Watch captured. What’s entirely missing is sleep data, which is only available via the Apple Health app.

If you’ve subscribed to Fitness+ (Apple’s paid personal fitness experience), you can also browse through and start any of the dozens of guided workouts that Apple offers. My wife really likes the yoga and dance classes Apple offers, and I’d consider taking their yoga classes if I had more time.

Last but not least, the Fitness app offers access to your activity sharing settings, which enable you to share your movement, exercise and standing data with other Apple users.

What’s entirely missing from the Fitness app is any sort of analytical information that turns your raw fitness data into actionable insights that you can use to improve your health. In other words, it lacks anything that’s similar to WHOOP’s strain coach, sleep coach and the weekly/monthly performance assessments.

Overview of the WHOOP app.
Overview of the WHOOP app.

The WHOOP app is an entirely different beast compared to Apple’s Fitness app. While it offers some of the same basic information as you can find in the Fitness app, it’s centered around providing actionable information.

For example, the WHOOP app’s home screen shows you your recovery and strain scores, last night’s heart rate variability, the current calorie burn and all tracked activities (including workouts and sleep). From there, you can drill down into the details of your recovery and strain scores and get a detailed sleep analysis.

Additionally, the WHOOP app offers several coaching features that can help you manage your strain during upcoming workouts, recommend the best time to go to bed, and give you detailed insights into how your lifestyle choices have impacted your biometrics in the past week and month.

WHOOP also has the ability to record your workouts and overlay biometric data, such as your strain, heart rate and calories burned in real-time, and it offers an extensive community feature. I covered all of these features in my dedicated WHOOP Strap 3.0 review, so I encourage you to check that out!


WHOOP teams (left) vs. Apple Watch activity sharing (right).
WHOOP teams (left) vs. Apple Watch activity sharing (right).

Both Apple and WHOOP have realized that providing users with a sense of community can be a motivating factor.

As a result, Apple offers virtual medals for achieving exercise, standing and movement goals, as well as for completing certain types of workouts. In a way, these medals are meant to keep you motivated to continue being active. I found them entertaining when I first got an Apple Watch, but since then I have paid zero attention to them and disabled all related notifications.

Apple also allows you to share your activity data with friends and family members. By doing so, you can “compete” to see who burns the most calories, logs the most exercise minutes and more. My wife and I had enabled this feature in the beginning, but when we upgraded to a newer version of the Apple Watch, we didn’t bother re-enabling activity sharing.

WHOOP allows you to join teams and share some basic metrics, like daily strain, recovery and sleep scores. The cool thing about WHOOP’s teams feature is that you can either create a team and invite others, or you can join one of the thousands of public teams created by someone else — some of which have tens of thousands of members.

My wife and I are part of a team that includes many of the athletes from our local CrossFit box, and it’s fun to see how the workouts we do every day — and how the lifestyle choices of my fellow athletes — impact the group’s sleep and recovery scores. 

Overall, both implementations have value. But I think WHOOP’s is more sophisticated and fun to use in the long run. 

At the same time, I should also mention that what is meant to be a friendly competition to motivate you can backfire if you get stressed when seeing that someone else is burning more calories, is waking up with a better recovery score, or is accumulating more strain during a workout. 

Based on my experience with friends and family, having this type of anxiety triggered by Apple Watch activity sharing and WHOOP teams is a real thing.

If you’re susceptible to getting riled up when someone else beats your numbers, I highly recommend turning off these community features.

On a side note, the same thing applies to getting anxious about your own numbers. While it’s not the focus of this article, be mindful of how fitness tracking influences your state of mind. If waking up in the morning and looking at your recovery score in WHOOP is anxiety-inducing, you might want to reconsider your priorities or stop looking at it until you’ve figured out how to deal with it. I mention this because my wife went through this issue and stopped using WHOOP for several months before she returned to the platform with a different state of mind.

Battery Life and Charging

I usually get through my day without having to worry about my Apple Watch running out of juice. Specifically, I get around 16 hours (including a CrossFit workout) out of my Apple Watch’s battery before I have to recharge it. Very occasionally, the battery will run down shortly before I go to bed (usually between 8:30 and 9 p.m.), with the watch turning to Low Power Mode or shutting down completely.

Personally, I’ve never seen that as an issue because I use the Apple Watch predominantly as a wristwatch, and secondarily as an extension of my iPhone (to receive notifications and to see upcoming calendar events, the current temperature and other information).

However, knowing that you have to recharge your Apple Watch around bedtime is a problem if you want to use the device for sleep tracking. If you do, you’ll have to charge your Apple Watch for 60 to 90 minutes sometimes during the day (or right before bedtime).

How to charge WHOOP with the slide-on battery pack.

WHOOP 3.0’s battery lasts for up to five days. Plus, you can actually recharge that battery without taking the strap off your wrist by using the sliding charge pack that ships with the device. It’ll replenish WHOOP’s battery in less than two hours. 


Apple Watch offers several integrations that I really appreciate and wish were also offered by WHOOP. 

Chief among these are native integration with HealthKit (Apple’s central database for storing health and fitness information) and compatibility with third-party heart rate monitors, including chest straps.

Apple has been significantly improving HealthKit (and the accompanying Health app) to enable third-party apps to store health-related information such as heart rate, blood pressure, sleep data, menstrual cycle details and more. Additionally, Apple provides secure interfaces for sharing this information with a growing number of healthcare providers. 

I love that approach and I envision a future where my doctor has access to all the information I have accumulated and stored in my Health app, making my healthcare more personalized and effective. 

Moreover, I appreciate that my Apple Watch can link up with third-party heart rate sensors (such as chest straps) via Bluetooth, which can be more accurate for certain types of workouts. 

WHOOP, on the other hand, is somewhat of a closed ecosystem that doesn’t have any standard interfaces for other software or hardware to integrate with.

I’d be OK if WHOOP sold a chest strap and it was the only one supported. Unfortunately, they don’t — so everything hinges on the effectiveness of the wrist-worn sensor.

On the bright side, WHOOP has started to integrate with other applications and platforms including Strava and TrainingPeaks. I don’t use either, so I can’t speak to their usefulness.

The bottom line is that I sincerely hope WHOOP continues enabling its platform to play nicely with others.


Join WHOOP for $0
You can join WHOOP with a free first month by using my affiliate link (below).

Apple and WHOOP utilize completely different pricing models, making it difficult to compare the devices side-by-side. On top of that, each brand has its own hardware update cycle.

In other words, you can purchase a new Apple Watch model every year starting from $399 or more, depending on the size, material, configuration and strap options you choose. On the other hand, WHOOP only updates its hardware every few years, and instead of purchasing the strap up-front, you have to enter a monthly subscription that includes both the device itself and all future software updates.

The advantage of Apple’s approach is that you can purchase an Apple Watch once and then use it for several years (typically, until the battery goes bad) without having any recurring costs. watchOS updates are free, and usually compatible with older Apple Watch models.

Of course, you can also spend close to $1,000 if you want the larger display, cellular connectivity and a fancy watch band. If you do that, you have to be OK with owning an expensive smartwatch that will be outdated when Apple releases a new model a year later. 

Plus, even the most expensive Apple Watch model is limited to the same basic fitness and sleep tracking capabilities as the cheapest option. So I don’t usually recommend pimping out your Apple Watch, unless you plan on wearing it for several years.

You can get the latest WHOOP Strap 3.0 for as little as $18 per month if you commit to a 36-month membership. If you don’t want to commit for such a long time, you can start with a month-to-month subscription that costs $30 per month.

If you’d like to give WHOOP a try, make sure to use my affiliate link below to save $30. 

Get $30 off WHOOP*

In other words, you can get WHOOP for free for a month to see if you like it. 

Why I Wear Both WHOOP and Apple Watch

My Apple Watch on one arm (top) and my WHOOP strap on the other (bottom).

Despite my love for WHOOP, I also wear my Apple Watch every day. Plus, I track all of my workouts using the Apple Watch.

Why is that the case, given everything I’ve said in this review about Apple Watch’s fitness tracking limitations?

The simple answer is that I love my Apple Watch but for different reasons than why I love and use WHOOP.

To me, Apple Watch is an excellent timekeeping device (it is a watch, after all) and an extension of my iPhone. I use my Apple Watch to receive notifications, add reminders (using Siri), manage the smart devices in our home (via HomeKit), communicate with friends and family via iMessage or walkie-talkie mode, unlock my iMac Pro (instead of typing in a password), pay at the grocery store and more.

Additionally, the Apple Watch has health features that aren’t directly related to activity and sleep tracking. For example, my Apple Watch can automatically detect if my heart starts beating irregularly or if I fall. I can also test how rhythmically my heart is beating by doing an ECG right from my wrist, or check my blood oxygenation (Apple Watch 6 only). While I don’t use any of these features on a daily basis, they’re certainly nice to have and prove how advanced Apple’s technology has become over the years.

In fact, I only realized how much I rely on my Apple Watch when I swapped it out for the Fitbit Versa, which I tested for an in-depth Fitbit vs. WHOOP comparison that I’m writing (stay tuned for that).

As I mentioned above, I also track most workouts with my Apple Watch. I’ve been doing that since before using WHOOP, and because it records the data in the Health app, doing so has been helpful for things like writing this article, as it allows me to compare the heart rate of certain workouts side-by-side.

Beyond that, I don’t use the Apple Watch for fitness or sleep tracking, but I’m looking forward to the Apple Watch Series 7 and watchOS 8 to see if Apple adds additional sensors and capabilities. If so, I’ll make sure to update this article.

However, I don’t anticipate that Apple Watch will match the capabilities of WHOOP anytime soon (certainly not this year), so I’ll keep using WHOOP for all things fitness, recovery and sleep tracking (and Apple Watch for everything else).

Frequently Asked Questions

WHOOP FAQW thumbnail
Click the image above to watch my WHOOP FAQ video, which answers 30 of the most common questions about the device.
Should I wear WHOOP and Apple Watch together?

That’s what I do, because there are clear benefits to using the devices in tandem.

The WHOOP strap is arguably the most sophisticated fitness, sleep and recovery tracker on the market. And the Apple Watch is the best smartwatch (at least if you’re invested in the Apple ecosystem). Combined, they’re a powerful duo that offers you everything you’d expect from such wrist-worn devices.

Can WHOOP store activity and sleep data in Apple’s Health app?  

Unfortunately, it cannot. I’ve been unsuccessfully asking for this integration since I started wearing WHOOP in early 2019. 

What factors impact the reliability of the heart rate readings?

There are several factors that influence the ability of the heart rate sensor (of both devices) to accurately monitor heart rate data. These include skin perfusion (which is different from person to person and impacted by temperature), fit, the presence of tattoos, water (swimming) and motion (rhythmic movements are better). 

If you think your Apple Watch or WHOOP isn’t correctly recording heart rate data, make sure the strap is tight enough around your wrist and that the sensor isn’t directly above your wrist bone (it should be about one inch away from it). 

If adjusting the tightness of the strap and the location of the sensor doesn’t work, consider wearing the device on your other wrist or using an arm or bicep strap.

Does Apple offer a bicep strap for the Apple Watch?

Apple does not offer a bicep strap, but Twelve South*, my favorite Apple accessory maker, does. It’s called the ActionSleeve 2*. I used the first-generation ActionSleeve and really liked it. 

Can I export my health data from Apple Watch?

Yes, you can export all of your data from the Health app by clicking on your profile image in the upper right corner and scrolling all the way down to “Export All Health Data.”

There are also a few third-party apps, such as Health Auto Export – JSON+CSV that give you a bit more control over the export format and allow you to select the data you want to export.

I’ve used the app referenced above when I performed a detailed comparison of my heart rate data captured by WHOOP, Apple Watch and a third-party chest strap.

Can I export my WHOOP data?

Yes, but it’s not as easy as exporting your data from the Health app. To do so, you have to reach out to WHOOP’s customer care team to request a data dump — which they’ll send to you within 45 days. 

My impression of this process is that it only exists because of privacy laws in the European Union (GDPR) and the state of California.

Personally, I think that being able to download my own data should be a feature of the WHOOP app that takes just minutes or a couple of hours. 

Is the Apple Watch or WHOOP better for sleep tracking?

The WHOOP strap is the better sleep tracker because it has more sensors that make accurate sleep stage tracking possible. Plus, WHOOP has much better battery life than the Apple Watch.

Does the Apple Watch offer something like a recovery score?

The Apple Watch does not offer recovery tracking or scoring. However, there are third-party apps, such as Athlytic, that aim to fill that gap.

I’ve tried Athlytic and think it has potential, but it relies on the limited data it gets from my Apple Watch, thus hindering its usefulness. 

Does the Apple Watch work with Android?

No, you need an iPhone running iOS to use an Apple Watch. WHOOP, on the other hand, works with both iOS and Android.

Apple Watch vs. WHOOP: My Final Verdict

WHOOP is the better fitness and sleep tracker.

I’ve been wearing both Apple Watch and WHOOP for several years, and I’ll continue doing so because the devices complement each other. 

Of course, I would prefer to wear a single device with all of the features I’ve outlined in this article. Unfortunately, I don’t see such a device emerging any time soon. 

Nevertheless, I get excited every fall to see what the new Apple Watch and watchOS will look like, and what steps Apple takes to make the device a more appealing and well-rounded fitness tracker. 

While my excitement about the Apple Watch follows an annual cycle, I still get excited every morning when I open the WHOOP app to check my recovery and sleep scores, and to see how my previous day’s behavior influenced them.

As I was finishing up this article, I started thinking about the question of what I would do if I had to choose between the two. Honestly, I wouldn’t know which one to choose because both enrich my life — just in entirely different areas. 

WHOOP is the better fitness tracker, without question, and I would always choose it over the Apple Watch for this purpose. 

At the same time, my Apple Watch lets me pay for groceries without having to swipe my credit card (and sharing my credit card number with the merchant), automatically unlock my iMac (so I don’t have to type a password) and send me notifications so I don’t have to pick up my iPhone. 

It’s a tough call. And that’s ultimately why I wear both devices.

What are your thoughts about the Apple Watch vs. WHOOP? Let me know in the comments below!

Medical Disclaimer

The information shared on this blog is for educational purposes only, is not a substitute for the advice of medical doctors or registered dieticians (which we are not) and should not be used to prevent, diagnose, or treat any condition. Consult with a physician before starting a fitness regimen, adding supplements to your diet, or making other changes that may affect your medications, treatment plan or overall health. MichaelKummer.com and its owner MK Media Group, LLC are not liable for how you use and implement the information shared here, which is based on the opinions of the authors formed after engaging in personal use and research. We recommend products, services, or programs and are sometimes compensated for doing so as affiliates. Please read our Terms and Conditions for further information, including our privacy policy.

11 thoughts on “WHOOP vs. Apple Watch”

  1. Would you stream the whoop hr to the iWatch for a better sampling rate? Can the whoop stream and use its own app, meaning would I lose whoop functionality if I stream to the iWatch?

    • I usually don’t broadcast my WHOOP HR to my Apple Watch because both devices use the same HR sensor technology and I don’t think one is better than the other. But if you do, your WHOOP will still capture your HR and you won’t forgo any functionality.

      • Thanks for the reply. Wouldn’t broadcasting to the iwatch address the issue of a low sampling rate? I did this recently with a polar chest strap and it worked great, until I had a string of bad readings that were far too high. It was a real pain to delete the entries individually. Now that I think about it, I did have a workout started. I assume sampling would still be high outside of a workout.

  2. Thanks! Your article was so complete, I today bought whoop with your code! I do think you deserve it, hope I can do more, but I can tell you at this time I will be using both! Thanks for all

  3. Thanks for the article. Been an avid whoop user for years, never owned an Apple Watch. Recently my insurance provider offered to buy me an Apple Watch 3 ($7) as an incentive to track my health. They use the integration with the health app (which as you stated whoop does not integrate). I can get a Series 6 for $200. In your opinion, is it worth the $200 if I use my Whoop for fitness tracking?


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