Welltory vs Oura vs WHOOP: an app, a ring and a band compared on cost, accuracy and what you get

Short answer

Oura and WHOOP are hardware you wear all night, paid for with a subscription; Welltory is an app with no hardware of its own. Oura is a ring plus a $69.99-a-year membership, WHOOP is a band included in a $199–$359-a-year membership, and Welltory measures heart rate variability with your phone camera, a watch or a chest strap, free or with Premium.

Who each one suits: a ring or a band if you want passive overnight data without thinking about it; Welltory if you want to read your nervous system from what you already own, or to add analysis on top of a device you already wear. They are not mutually exclusive — Welltory reads Oura data and can measure with a WHOOP 4.0 as a heart rate monitor.

Before you blame yourself for "failing at tracking", check what your body already recorded: the gap is usually the device, the window or the price, not your discipline.

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Note: competitor prices and features on this page come from Oura's and WHOOP's own websites and support pages, checked on October 21, 2026, in US dollars before tax; Welltory details come from Welltory's Help Center and plans page on the same date. Prices change and differ by country, so each company's own page is the source of truth. Welltory is a general wellness product: it does not diagnose, treat or replace medical care.

Welltory vs Oura vs WHOOP at a glance

Prices: welltory.com/plans, ouraring.com and whoop.com, checked October 21, 2026, US dollars before tax. Welltory's prices are from its website; in the App Store and Google Play, prices and plan options can differ.

What does each one actually measure?

The three products answer the same question — how is my body coping? — from different places, at different times of day.

Oura is a ring worn on the finger. Oura's support page says it measures heart rate variability only during sleep, taking five-minute samples through the night and averaging them, "to ensure the most reliable and interpretable data". The ring turns that, along with sleep, temperature and movement, into three daily scores: Readiness, Sleep and Activity. With a membership you also get detailed sleep analysis, 24/7 heart rate, advanced temperature and blood oxygen, daytime stress, cycle insights, cardiovascular age and VO2 max, among other features listed on Oura's membership page.

WHOOP is a band worn on the wrist or body. WHOOP's developer documentation says its Recovery score is calculated from the previous day and your sleep, using resting heart rate, heart rate variability, respiratory rate, sleep duration and quality, skin temperature and blood oxygen. Next to Recovery sit Strain (load) and Sleep. On WHOOP's membership page, the Peak tier adds Healthspan and a real-time Stress Monitor, and the Life tier adds blood pressure insights, an ECG Heart Screener and on-demand AFib detection on the WHOOP MG device. WHOOP lists a 14+ day battery for WHOOP 5.0.

Welltory is an app. It takes a heart rate variability measurement when you start one — with the phone camera and flash, an Apple Watch, a Samsung Galaxy Watch 4 or later, or a compatible Bluetooth chest strap — and turns it into an HRV-based reading of stress and energy. On iPhone, the Today screen with daily Health, Battery and Stress indicators is currently available, Welltory's Help Center says, to Apple Watch and Oura users; on Android, a similar Wellness report is being rolled out. Premium analyses each measurement with 21 metrics and keeps your full history; the free version allows one measurement a day with five core indexes and keeps 30 days of data. Sleep, steps and workouts come in from Apple Health, Health Connect, Samsung Health or a direct connection to devices such as Oura, Garmin and Fitbit.

So the honest summary is not "which one measures more". A ring and a band collect passively while you sleep; Welltory takes a deliberate reading while you are awake and still, and reads whatever else your devices already record. Different windows, different trade-offs.

How accurate is HRV and sleep on Oura, WHOOP and a phone camera?

Independent studies exist for all three, and the honest reading is that each is good at what it was tested for — and that the results move between device generations.

Overnight HRV, five devices against an ECG. In a 2025 study in Physiological Reports, 13 healthy adults wore an ECG and several wearables at once for 536 nights. For overnight HRV, agreement with the ECG (Lin's concordance) was 0.99 for Oura Ring 4 and 0.97 for Oura Gen 3, with a mean error of about 6% and 7%; WHOOP 4.0 scored 0.94, with a mean error of about 8%. The authors described Oura as having the highest agreement and WHOOP as acceptable. The study was funded by the Air Force Research Laboratory and the authors declared no competing interests. Two limits: 13 people is a small sample, and WHOOP 5.0 and WHOOP MG were not tested.

An earlier lab study reversed the order. In 2022, a study in Sensors, funded by the Australian Institute of Sport, tested six devices on 53 adults during one night in a sleep laboratory. Against ECG, WHOOP 3.0 HRV agreement was excellent (intraclass correlation 0.99), while the older Oura Gen 2 was good (0.63). For sleep stages, both were modest — about 61% agreement with polysomnography for Oura and 60% for WHOOP — and the authors concluded all six devices were valid for total sleep time but "require further improvement" for specific sleep stages. The paper says the wearable companies had no input into its design or interpretation; the authors also disclosed that their lab receives research support from WHOOP, which, they state, was not involved in this study.

Sleep stages on a newer ring. A 2024 study in Sensors compared Oura Ring Gen 3, Fitbit Sense 2 and Apple Watch Series 8 with polysomnography in 35 adults and found the ring's wake, light, deep and REM estimates did not differ significantly from the reference on average, although night-by-night agreement for deep and REM sleep totals was poor (intraclass correlations of 0.32 and 0.27). That study was funded by Oura, and its lead author sits on Oura's medical advisory board — worth knowing when you weigh it.

The phone camera. In a 2022 study in Computer Methods and Programs in Biomedicine, researchers compared Welltory's camera measurement with a simultaneous ECG in 26 professional cyclists at rest, lying and seated. They found no significant differences from the ECG for either of the two apps tested — Welltory and Elite HRV, which uses a chest strap — with correlations of 0.77 to 0.94 across the two and good to excellent reliability, at both five-minute and one-minute lengths. That is a daytime resting snapshot, not overnight data, and it was done on trained athletes. No study we know of has tested Welltory, Oura and WHOOP side by side, so we do not rank them.

What this means in practice: all three are usable for following your own trend. None of them is a medical test, and a single number from any of them means less than how it moves against your own previous weeks. If you want to go deeper into the ring-versus-watch question, we compared Oura Ring and Apple Watch accuracy separately, and how HRV from a phone camera works in detail.

What does each one cost to own today?

Here is the arithmetic on list prices, so you can see the shape rather than take anyone's word for it. US dollars before tax, as shown on each company's site on October 21, 2026. We ignore Oura's included first month, discounts, tax and any change to renewal prices. Welltory's prices are its website prices; app store prices can differ.

Three things the table does not show. First, the hardware: Welltory needs no device, but if you want a measurement from a watch or a chest strap, that is whatever you paid for the watch or strap. Second, the shape of the cost: WHOOP's price is entirely recurring, Oura's is mostly upfront, Welltory's is optional. Third, what you get for the money is not the same — a ring and a band give you passive overnight data that a phone cannot.

Welltory's annual plan renews automatically until you cancel; the lifetime plan is a one-time payment. Blog readers get 20% to 36% off Premium with the promo code well_blog — the details and the current figure for your country are on our Welltory pricing page.

Is there a WHOOP alternative without a subscription?

Yes, in two senses — and it is worth being precise about both.

Without a hardware subscription. WHOOP has no separate device price: the band comes with the membership. WHOOP's terms of use say that when a membership ends, "your right to use the Services shall cease", and that an account that is not paid up cannot upload data from the device, although you can request a copy of your data. So if what you dislike is paying every year to keep a device working, the alternatives are hardware you buy once — a watch, a chest strap — or no hardware at all: your phone.

Without any subscription. Welltory has a free version that does not expire: one HRV measurement a day with five core indexes, with 30 days of history kept. That is a real, lasting option for a morning check-in.

Welltory Premium is a subscription too — we would rather say that plainly than let the headline imply otherwise. The difference is what it is tied to: Premium unlocks analysis and history, not a device. If you stop paying, the phone in your pocket still works and the free version stays.

What an app does not replace is WHOOP's passive, 24-hour band. If what you want is to put something on and never think about it, an app is a different trade-off, not a copy.

Does Oura work without a subscription?

Partly. According to Oura's support page (updated October 16, 2026), without a membership "you'll only be able to see your three daily Oura scores (Readiness, Activity, and Sleep)", plus ring battery, basic profile details, app settings and Explore content. You can still download your data through Oura's Membership Hub, but the Oura API is not available. Oura also says Gen2 rings do not require a membership.

Features Oura lists as needing a membership include detailed sleep analysis, 24/7 heart rate, advanced temperature and blood oxygen, daytime stress, cardiovascular age and VO2 max, cycle and pregnancy insights, and third-party integrations.

If you are weighing a ring without a membership, ask what you would actually look at each morning. Three scores without the detail behind them is a narrow window onto a $349 device.

Can you use Welltory with Oura or WHOOP?

Yes, with specific limits that Welltory's Help Center spells out.

With Oura. Welltory's device table lists Oura as supported for activity tracking but not for heart rate variability measurements in Welltory — so for an HRV reading inside Welltory you still use the camera, a compatible watch or a chest strap. Oura can send data to Welltory directly (workouts and readiness for the day) or through Apple Health or Health Connect (workouts, readiness, sleep, meditation and data for Welltory's Move report, Yesterday's heart report and Move plan). The Help Center recommends using one connection type, not both, to avoid duplicate data. On iOS, Welltory's newer Sleep Analysis is built on raw data from an Apple Watch or an Oura, so if you sleep in the ring you get that report too. Because Oura lists third-party integrations among membership features, check with Oura whether your connection needs an active Oura membership.

With WHOOP. Welltory's device table lists WHOOP 4.0 as usable for HRV measurements in Welltory, and WHOOP Strap 3.0 on iOS only; activity data from WHOOP is not listed as supported. To measure, turn on HR Broadcast in the WHOOP app's strap settings; the Help Center notes the band may show 70 bpm for a few moments at the start while the signal stabilises, and that this is not included in the measurement. Newer WHOOP models are not listed in the Help Center yet, so check compatibility before relying on them.

Why combine them at all? Because the ring or band records your night, and Welltory adds a deliberate daytime reading you can tag with what happened — a hard session, a bad night, a drink, a difficult call — so patterns become visible over weeks. If you are juggling several sources, we wrote up which app combines Apple Health, Garmin and Oura.

Which one is right for you?

Choose a ring (Oura) if sleep is the main reason you are buying, you do not want to wear a watch to bed, and you are fine with a membership for the detail behind the three daily scores.

Choose a band (WHOOP) if you want training load, recovery and sleep bundled in one 24/7 device, and a yearly membership that includes the hardware suits you better than an upfront purchase. If you are comparing recovery scores across devices, see how WHOOP Recovery and Apple Readiness compare.

Choose Welltory if you already own a phone, an Apple Watch, a Galaxy Watch or a chest strap and do not want another device or another hardware subscription; if you want a morning reading of your nervous system you can start for free; or if you already wear a ring and want analysis on top of it. If you have no wearable at all, here is how to measure HRV without a wearable.

Choose none of them if what you need is a diagnosis. A persistent symptom — chest pain, fainting, a racing heart at rest, exhaustion that does not lift — belongs with a clinician, whatever any score says.

Why your ring, your band and your app give you different numbers

If you have tried two of these and got two different HRV values, you did not do anything wrong.

The windows are different. Oura averages five-minute samples across the whole night. WHOOP builds Recovery from your sleep. Welltory's reading is a short measurement while you are awake, still and sitting or lying. Heart rate variability changes with time of day, position, breathing, digestion and stress, so three honest numbers taken in three different states will not match — and should not. The methods also differ between devices, which is one reason the accuracy studies above sometimes disagree with each other.

What does carry meaning is your own trend in one window. Pick one source for the number you watch, measure under the same conditions, and compare this week with your last few weeks rather than with a chart or with someone else's ring. We explained why HRV fluctuates from day to day and what a good HRV range is for exactly this reason.

Before you blame yourself for a "bad" score, check what your body already recorded the day before: a short night, a late meal, a hard workout, a stressful evening. Change one thing and watch the trend for one to two weeks.

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How Welltory helps — and what it cannot do

Welltory is a general wellness app, not a medical device, and it does not make or sell a ring or a band. It does not diagnose, and nothing it shows replaces a clinician.

What it does is turn signals your body already produces into something you can read — with hardware you already have.

A routine that works whether or not you own a wearable:

1. Measure at the same time each morning, before coffee and before your phone — with the camera, your Apple Watch, your Galaxy Watch, a chest strap, or a WHOOP 4.0 in HR Broadcast mode.

2. When the app asks what happened, answer with a tag — tapped, typed or spoken: a late dinner, a hard session, a bad night, a difficult conversation.

3. Read Health, Battery and Stress before planning the day, and put the heavy things on the days they allow.

4. If you wear an Oura, connect it once — directly or through Apple Health or Health Connect, not both — so your sleep and workouts sit next to your readings.

5. Once you have a few weeks of tagged readings, look at what tends to come before your harder days. Patterns in the app are connections worth discussing with your doctor, not proof of a cause.

What Premium adds: as many measurements a day as you like in Journal, so you can compare morning and evening; the 21 metrics behind each reading; personalized sleep analysis; weekly and monthly trends; and a history that is kept beyond 30 days. What the free version keeps: one daily measurement with five core indexes, breathing practices, and syncing with Apple Health, Health Connect and Samsung Health.

What Welltory cannot do: record your night passively without a wearable, measure HRV from an Oura ring inside the app, detect a heart rhythm problem, or tell you what a symptom means. Camera measurements are also less reliable if you are under 18 or pregnant, as the Help Center notes.

Try Premium with the blog reader discount

The annual plan renews automatically until you cancel; the lifetime plan is a one-time payment.

Curious how reliable the measurement itself is? We wrote that up separately: is Welltory accurate.

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