FDA-cleared means one specific feature on a device passed a 510(k) review showing it performs comparably to an existing cleared device. It is not the same as FDA-approved, and it never covers the whole watch. On a typical smartwatch only two or three features are cleared — usually ECG, AFib history, sleep apnea notifications or hypertension notifications — while step counts, sleep stages, HRV, stress scores, SpO2 and readiness scores are unregulated general wellness features with no clearance behind them.

Every smartwatch marketed on health features now carries some version of the same badge: FDA-cleared. It appears on Apple’s health pages, in Samsung’s launch materials, in Whoop’s marketing, and in roughly nine out of ten product listings that mention ECG.

It is a real distinction and it is worth understanding. It is also far narrower than almost anyone assumes, it has never meant the watch is cleared, and in January 2026 the FDA shifted the line in a way that puts even more of what your watch shows you outside the regulated category entirely.

Here is what the label actually covers.

Cleared Is Not Approved

These two words get used interchangeably in product copy and they mean different things.

FDA-approved comes from the premarket approval pathway. It is reserved for high-risk devices — implantable pacemakers, heart valves, that class of product — and it requires the manufacturer to demonstrate safety and effectiveness with its own clinical evidence. It is slow, expensive, and rare.

FDA-cleared comes from the 510(k) pathway. The manufacturer demonstrates that the device is substantially equivalent to something already legally on the market. It is a comparison, not a fresh proof from first principles.

Every consumer smartwatch health feature you can buy today is cleared. None is approved. If you see “FDA-approved smartwatch” in a listing or a review, the writer has used the wrong word — which is a reasonable early signal about how carefully the rest of the page was researched.

Clearance Applies to a Feature, Never to a Watch

This is the part that matters most in practice.

When Apple obtained clearance for its ECG app, the FDA cleared that algorithm, for that stated purpose: identifying signs of atrial fibrillation from a single-lead reading the user deliberately takes. It did not clear the optical heart rate sensor, the sleep tracking, the activity rings, the VO2 max estimate, the wrist temperature sensing, or anything else on the device.

So a watch that carries three cleared features and forty uncleared ones is entirely normal, and the badge on the box tells you nothing about the forty.

A rough map of where the line falls on a typical modern smartwatch:

Usually cleared — ECG on demand, atrial fibrillation history, sleep apnea notifications, hypertension notifications, irregular heart rhythm notifications.

Almost never cleared — step count, distance, calories, sleep stages, HRV, stress and readiness scores, SpO2 as displayed to consumers, respiratory rate, body temperature trends, recovery scores, training load.

The second list is where most people spend most of their attention. It is all general wellness.

What Is Actually Cleared, and When

The concrete list is short enough to state in full.

  • Apple ECG app — cleared in 2018 to identify signs of atrial fibrillation.
  • Apple sleep apnea notifications — cleared September 2024, available in the US from 17 September 2024.
  • Apple hypertension notifications — cleared 11 September 2025, shipped 15 September 2025 with watchOS 26.
  • Samsung irregular heart rhythm notification — cleared, announced May 2023.
  • Samsung sleep apnea feature, including a version 2.0 update — cleared.
  • Whoop ECG — cleared April 2025, and the only FDA clearance Whoop holds on record.

As of August 2026, exactly three consumer wearable features were cleared to screen for sleep apnea: Apple’s, Samsung’s original, and Samsung’s 2.0 update. That is the entire field. If a device you are looking at claims sleep apnea detection and is not one of those, it is making a wellness claim, not a screening claim.

Oura sits deliberately outside this list. Its features are general wellness products, which is a regulatory choice rather than a quality judgement — but it does mean a readiness score carries no clearance behind it.

The detail on individual features is covered in our guides to which smartwatches have ECG and AFib detection, smartwatches that detect sleep apnea, and Apple Watch hypertension notifications.

What Changed in January 2026

On 6 January 2026 the FDA updated two guidance documents that together define this boundary:

  • General Wellness: Policy for Low Risk Devices
  • Clinical Decision Support Software — updated again on 29 January 2026

The practical effect is that a broader set of wearable functions now sits more comfortably in the unregulated general wellness category and faces fewer premarket review requirements. The guidance explicitly names sleep and activity trackers, breathing technique coaching, healthy eating plan managers, and non-invasive sensing devices that estimate physiological parameters such as blood pressure and oxygen saturation.

That last one is the significant clause, because cuffless blood pressure estimation is the feature the entire industry is racing toward.

The dividing principle did not change. A general wellness product must relate to maintaining or encouraging a general state of health, must present low risk, and — the operative test — must not “include claims, functionality, or outputs that prompt or guide specific clinical action.” The moment a product provides functionality for clinical management or is intended to treat a disease or condition, it becomes a regulated device.

The FDA also stated it intends to exercise enforcement discretion for software functions that provide only a single recommendation supporting a healthcare professional’s decision, provided the recommendation remains clinically appropriate.

What this means for you as a buyer: expect more health features to ship faster, with more of them carrying no clearance. The badge is going to appear on a smaller fraction of what your watch does, not a larger one.

The Question Clearance Does Not Answer

Clearance tells you a feature was reviewed against a specific claim. It does not tell you how well the feature performs on your wrist, on your skin tone, during exercise, or with a loose strap.

A cleared sleep apnea notification is designed to flag a pattern over multiple nights that warrants a conversation with a doctor. It is not a sleep study, and it is not designed to catch every case. A cleared ECG identifies signs of AFib in a reading you deliberately took while sitting still; it is not continuous monitoring and it does not look for most other arrhythmias.

Reading a cleared feature as more than its stated purpose is the most common mistake, and it is the mistake the clearance language is specifically written to prevent. The broader accuracy question — what these sensors do well and where they fall down — is covered in how accurate smartwatch heart rate monitors are.

How to Use This When Buying

If you are buying for a specific health concern — a family history of AFib, suspected sleep apnea, monitoring blood pressure risk — clearance is the thing that separates a screening tool from a wellness estimate, and it should drive your choice of device. Check that the specific feature you care about is cleared, not that the brand has clearance on something.

If you are buying for training and general activity, clearance barely matters. Sensor quality, battery life, GPS accuracy and the app experience will affect your daily use far more, and those are covered in our best smartwatches of 2026 and best running watches guides.

In both cases, read the feature name, not the badge. “FDA-cleared” on a box is a claim about one algorithm. The interesting question is always: cleared for what?

The Short Version

Cleared is not approved. Clearance covers a single feature, never the whole device. On a typical smartwatch that means two or three features are reviewed and everything else on the health screen is unregulated general wellness. The January 2026 guidance updates widened the general wellness category further, so that ratio is moving in the direction of less regulated, not more.

None of that makes the uncleared data worthless. It makes it a signal about your own baseline rather than a verdict about your health — which is the right way to read almost everything a wearable tells you.

This article summarises published FDA guidance and clearance records. It is not medical advice. If a wearable flags an irregular reading, take it to a doctor rather than to a search engine.

Frequently Asked Questions

Is FDA-cleared the same as FDA-approved?
No, and the difference is substantial. Clearance comes through the 510(k) pathway, where a manufacturer shows the device is substantially equivalent to something already legally on the market. Approval comes through premarket approval, a far more demanding process reserved for high-risk devices such as implantable pacemakers, and it requires clinical evidence of safety and effectiveness in its own right. Every consumer smartwatch health feature on the market is cleared, not approved. Any marketing that says FDA-approved smartwatch is using the wrong word.
Which smartwatch features are actually FDA-cleared?
The list is shorter than most buyers expect. Apple's ECG app has been cleared to identify signs of atrial fibrillation since 2018, its sleep apnea notification feature was cleared in September 2024, and its hypertension notification feature was cleared on September 11, 2025 and shipped days later with watchOS 26. Samsung holds clearance for its irregular heart rhythm notification feature and for its sleep apnea feature including a version 2.0 update. Whoop received clearance for its ECG feature in April 2025. As of August 2026 exactly three consumer wearable features were cleared to screen for sleep apnea: Apple's, and Samsung's original plus its 2.0 update.
What changed with the FDA rules in 2026?
On January 6, 2026 the FDA updated its General Wellness: Policy for Low Risk Devices guidance and its Clinical Decision Support Software guidance, with a further clinical decision support update on January 29. The effect is that a wider set of wearable functions — sleep and activity tracking, breathing coaching, and non-invasive sensing that estimates parameters such as blood pressure or oxygen saturation — sit more comfortably in the unregulated general wellness category, facing fewer premarket review requirements. The dividing line is unchanged in principle: the moment a product's claims or outputs prompt or guide a specific clinical action, it stops being general wellness and becomes a regulated device.
Does the Oura Ring have FDA clearance?
Oura's core features are general wellness products, not cleared medical device functions. That is not a criticism of the hardware — it is a description of the regulatory category the company has chosen to sit in. It does mean that a readiness score, a sleep stage breakdown or a temperature trend from any ring or watch carries no clearance behind it, and should be read as a consumer signal rather than a clinical measurement.
If a feature is not cleared, is the data useless?
No. Uncleared does not mean inaccurate, it means unreviewed for a specific clinical claim. Step counts, resting heart rate trends and sleep duration are genuinely useful for spotting changes in your own baseline over time. What you should not do is treat an uncleared number as a diagnosis, or assume that because one feature on the watch is cleared, the rest of the health screen carries the same weight.
Should FDA clearance change which watch I buy?
Only if you are buying for a specific health reason. If you want ECG on demand, AFib history, sleep apnea screening or hypertension notifications, clearance is the thing that separates a real screening tool from a wellness estimate, and it should drive the decision. If you are buying for training, activity and general habit tracking, clearance is close to irrelevant and battery life, accuracy of the heart rate sensor and the quality of the app matter far more.