What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
In October 2024, iOS 18.1 developer beta 6 enabled Apple Watch sleep-apnea notifications when paired with watchOS 11.1 beta 4. The iPhone did not detect sleep apnea by itself: compatible Apple Watches collected overnight movement data, while the iPhone’s Health app displayed the results and handled setup.
This is now a historical beta milestone, not a current software recommendation. The feature is a screening aid that can identify patterns suggestive of moderate-to-severe sleep apnea; it is not a medical diagnosis.
What changed in iOS 18.1 beta 6?
Apple’s iOS 18.1 developer beta 6, released on October 7, 2024, exposed sleep-apnea notification support for compatible Apple Watches. The companion requirement was watchOS 11.1 beta 4; updating only the iPhone was not sufficient. Earlier iOS 18.1 beta users might not have seen the feature because Apple had not yet fully enabled or exposed it.
The change depended on both devices. The Apple Watch gathered the overnight sensor data, and the iPhone stored, presented, and configured the feature through Health. Later stable releases superseded those beta builds. See the contemporaneous reports from MacRumors and 9to5Mac.
#1 Best Overall
![Apple Watch Series 11 [GPS 46mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - M/L. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/416RQ0rtsUL._SL160_.jpg)
- A FULL-FEATURED HEALTH TRACKER—Apple Watch Series 11 gives you invaluable insights about your body, right from your wrist. Take an ECG anytime* and get alerts for a high and low heart rate or an irregular rhythm*—so you can stay closer to your heart. You can also view your overnight health tracking metrics with the Vitals app* and be notified of possible sleep apnea.*
- KNOW YOUR SLEEP SCORE—With advanced sleep tracking, Series 11 gives you a daily sleep score. It’s an easy way to help measure and understand the quality of your sleep, so you can make it more restorative.
- GET HYPERTENSION NOTIFICATIONS—Did you know that Series 11 can spot signs of chronic high blood pressure? By analyzing how your blood vessels respond to beats of the heart, it can notify you of possible hypertension.*
- SAFETY FEATURES—A smartwatch that puts your safety first. Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence from your nearby iPhone*—Series 11 is made to help everyone stay active, from runners and hikers to strength-training enthusiasts.
What are Breathing Disturbances?
Breathing Disturbances is Apple’s name for a nightly metric derived from small wrist movements associated with interruptions to normal breathing patterns during sleep. The Apple Watch uses its accelerometer; it does not directly measure airflow, and the feature does not require the blood-oxygen sensor.
Health presents readings as either:
- Elevated
- Not Elevated
Those labels are not a count of apnea events and should not be converted into a clinical apnea-hypopnea index. Apple provides trend views covering one month, six months, and one year. The company describes the mechanism and output in its health-feature announcement and watchOS 11 announcement.
How the sleep-apnea alert works
The system does not issue a meaningful alert after one unusual night. It evaluates data in consecutive 30-day windows and requires sufficient overnight readings. Apple’s user instructions specify at least 10 nights of watch wear within a 30-day period.
Rank #2
![Apple Watch Series 11 [GPS 42mm] Smartwatch with Rose Gold Aluminum Case with Light Blush Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/31caPPnRysL._SL160_.jpg)
- A FULL-FEATURED HEALTH TRACKER—Apple Watch Series 11 gives you invaluable insights about your body, right from your wrist. Take an ECG anytime* and get alerts for a high and low heart rate or an irregular rhythm*—so you can stay closer to your heart. You can also view your overnight health tracking metrics with the Vitals app* and be notified of possible sleep apnea.*
- KNOW YOUR SLEEP SCORE—With advanced sleep tracking, Series 11 gives you a daily sleep score. It’s an easy way to help measure and understand the quality of your sleep, so you can make it more restorative.
- GET HYPERTENSION NOTIFICATIONS—Did you know that Series 11 can spot signs of chronic high blood pressure? By analyzing how your blood vessels respond to beats of the heart, it can notify you of possible hypertension.*
- SAFETY FEATURES—A smartwatch that puts your safety first. Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence from your nearby iPhone*—Series 11 is made to help everyone stay active, from runners and hikers to strength-training enthusiasts.
- The watch records Breathing Disturbances while you sleep.
- Health accumulates enough qualifying nights for an evaluation window.
- The software looks for a consistent pattern rather than relying on one elevated reading.
- If the pattern suggests signs of moderate-to-severe sleep apnea, you may receive a Possible Sleep Apnea notification.
An alert includes the relevant period and educational information. Apple also provides a report that can be exported as a PDF, containing three months of Breathing Disturbances data and notification details. The FDA clearance describes the feature’s intended use and 30-day analysis in document K240929.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesWhich Apple Watches were supported at launch?
For the October 2024 beta rollout, Apple listed:
- Apple Watch Series 9
- Apple Watch Series 10
- Apple Watch Ultra 2
You also needed a compatible iPhone, the corresponding iOS and watchOS software, sleep tracking configured, and enough overnight wear. Apple Watch SE was not included in the original launch documentation. Later Apple Support documentation has expanded compatibility wording to include newer hardware, including Apple Watch SE 3, but that does not mean SE 3 supported the October 2024 beta. Check Apple’s current support page for the applicable software and regional requirements.
How to view Breathing Disturbances
In the later public interface, open:
- Health on your iPhone.
- Search or Browse, depending on the interface and region.
- Respiratory.
- Breathing Disturbances.
Beta labels and menu placement can change between builds, so a screenshot from iOS 18.1 beta 6 should not be treated as a permanent interface reference.
Rank #3
![Apple Watch Series 10 [GPS 46mm case] Smartwatch with Jet Black Aluminum Case with Black Sport Band - M/L. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant](https://m.media-amazon.com/images/I/31Cud2WnszL._SL160_.jpg)
- WHY APPLE WATCH SERIES 10 — Bigger display with up to 30 percent more screen area.* A thinner, lighter, and more comfortable design.* Advanced health and fitness features provide invaluable insights.* Safety features connect you to help when you need it.* Faster charging gives you 80 percent battery in about 30 minutes.*
- ADVANCED HEALTH INSIGHTS — Take an ECG anytime.* Get notifications if you have high or low heart rate or an irregular heart rhythm.* Understand your menstrual cycle and get retrospective ovulation estimates.* See overnight health metrics like heart rate, respiratory rate, and more with the Vitals app.* Track sleep and get notifications if Apple Watch detects signs of sleep apnea.*
- A POWERFUL FITNESS PARTNER — Measure all the ways you move with Activity Rings, which are customizable to match your lifestyle. Get advanced metrics for a range of workouts with the Workout app. Track the intensity of your workouts with training load. Use depth and water temperature sensors for your aquatic adventures. And Apple Watch comes with three months of Apple Fitness+ free.*
- STAY CONNECTED — Send a text, take a call, listen to music and podcasts, use Siri, and get notifications on the go. Apple Watch Series 10 (GPS) works with your iPhone or Wi-Fi to keep you connected.
- INNOVATIVE SAFETY FEATURES — Fall Detection and Crash Detection can connect you with emergency services in the event of a hard fall or a severe car crash. Emergency SOS lets you call for help with the press of a button.* Check In automatically notifies a loved one when you’ve arrived at your destination.*
How to enable Sleep Apnea Notifications
- Open Health on the iPhone.
- Tap Search or Browse.
- Open Respiratory.
- Select Sleep Apnea Notifications.
- Tap Set Up.
- Review the information and confirm your age and whether you have already been diagnosed with sleep apnea.
- Complete setup, then wear the watch to sleep.
The intended population is adults aged 18 or older who have not already received a sleep-apnea diagnosis. Regional regulatory authorization also affected availability; the feature was not guaranteed to appear everywhere at the same time.
What an alert means—and what it does not
A notification means the watch detected a pattern that may be consistent with sleep apnea. It does not confirm that you have the condition, establish its severity, or prescribe treatment. Discuss the notification and its PDF report with a healthcare professional. Do not start or stop medication, begin treatment, or assume a diagnosis based only on the watch.
Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallA missing notification is not proof that you do not have sleep apnea. Apple explicitly cautions that not everyone with sleep apnea will receive one. Loud snoring, witnessed pauses in breathing, gasping during sleep, morning headaches, or excessive daytime sleepiness remain reasons to seek medical advice regardless of what the watch reports.
Rank #4
![Apple Watch Series 10 [GPS, 46mm] - Silver Aluminum Case with Denim Sport Band, S/M (Renewed)](https://m.media-amazon.com/images/I/41QK6T8A0yL._SL160_.jpg)
- This pre-owned product is not Apple certified, but has been professionally inspected, tested and cleaned by Amazon-qualified suppliers.
- There will be no visible cosmetic imperfections when held at an arm’s length. There will be no visible cosmetic imperfections when held at an arm’s length.
- This product will have a battery which exceeds 80% capacity relative to new.
- Accessories will not be original, but will be compatible and fully functional. Product may come in generic Box.
- This product is eligible for a replacement or refund within 90 days of receipt if you are not satisfied.
Breathing Disturbances can also be influenced by alcohol, medication, sleeping position, and other causes of disrupted sleep. Persistent symptoms should not be dismissed as an incidental reading.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Common problems and what to check
No alert after several nights
This is expected. The feature needs enough data for its evaluation period, including at least 10 nights within 30 days. A few nights are not enough to draw the intended pattern-based conclusion.
No Breathing Disturbances data
- Confirm that sleep tracking is configured.
- Wear the watch consistently and snugly overnight.
- Check that the battery lasted through the night.
- Verify wrist detection and watch fit.
- Confirm that the iPhone and watch use compatible software.
- Look under Health > Respiratory, since beta menu labels may vary.
The watch is supported, but the feature is missing
Check the watch model, iOS and watchOS versions, region availability, completed onboarding, and the amount of overnight data. Regulatory authorization and rollout timing varied by country or region.
Best Value
- STAY CLOSER TO YOUR HEART HEALTH—The most accurate heart rate sensing in a wearable,* Series 12 now measures HRV as often as every five minutes for insights on stress and recovery, and takes background heart rate readings every five seconds.
- A FULL-FEATURED HEALTH TRACKER—Better understand your body with invaluable health insights. View your overnight health metrics with the Vitals app and get a daily sleep score,* track your menstrual cycle,5 and take readings of your blood oxygen.*
- CHECK YOUR READINESS FOR THE DAY—Know when to rest or put yourself to the test. The readiness experience can help you determine your capacity to take on the day by analyzing your recent activity, vitals, and sleep.
- A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, and Workout Buddy powered by Apple Intelligence from your nearby iPhone8—Series 12 helps you stay active, from running to hiking to strength training.
- KEEP HELP CLOSE AT HAND—A smartwatch that puts your safety first. Series 12 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.*
An elevated reading appears without an alert
That is not necessarily a malfunction. An elevated nightly classification is different from a Possible Sleep Apnea notification, which depends on a consistent pattern across the evaluation window.
Should you install an iOS or watchOS beta for this feature?
| Installing may make sense if you… | Waiting may be wiser if you… |
|---|---|
| Want early access and own supported hardware. | Need maximum reliability from sleep tracking. |
| Accept bugs, changed labels, and incomplete features. | Depend on the watch for alarms, work, or other essential functions. |
| Have a current backup or secondary iPhone. | Do not want to install beta software on the watch as well. |
| Can troubleshoot pairing, battery, and missing-data problems. | Would treat a health-related feature as clinically authoritative. |
Apple describes beta software as preview software intended for testing and recommends reviewing release notes and maintaining a recovery path. Its guidance is available at Apple Developer Support. Because this feature required a second beta on the watch, installing it added another possible source of pairing or data problems.
Buying an Apple Watch for sleep-apnea notifications
If you are considering hardware specifically for this feature, the launch-supported Series 9, Series 10, and Ultra 2 are the relevant 2024 models. Series 10 offers newer hardware than Series 9, while Ultra 2 is better suited to buyers who also value its rugged design and larger battery. Buying an older or refurbished watch solely for screening may not make sense if you need newer hardware, long-term availability, or a smaller watch.
When considering refurbished stock, check battery health, Activation Lock status, warranty, return terms, iPhone compatibility, and regional feature availability. Current 2026 pricing and inventory vary and are not included here. No Apple Watch guarantees that sleep apnea will be detected, and none replaces a clinician-directed home sleep test or formal overnight sleep study.
What happened after the beta?
Apple announced the health feature in September 2024, enabled it for testers in iOS 18.1 beta 6 and watchOS 11.1 beta 4 on October 7, 2024, and later incorporated it into public software after regulatory clearances. The accurate current framing is therefore that iOS 18.1 beta 6 was the historical enablement point—not that it remains the latest iOS beta or a current installation target.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
