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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchApple released watchOS 10.5 developer beta 3 on April 23, 2024. The update carried build 21T5560d and arrived one week after beta 2. Despite the wording of the release announcement, contemporaneous reports identified no major new user-facing feature in beta 3; it was primarily a testing and maintenance release.
watchOS 10.5 beta 3: release details
- Release date: April 23, 2024
- Build: 21T5560d
- Audience: Eligible Apple developers and beta testers
- Previous build: watchOS 10.5 beta 2, build 21T5555d
Beta 3 was part of Apple’s wider third-beta rollout, alongside iOS 17.5, iPadOS 17.5, tvOS 17.5, macOS Sonoma 14.5 and related platform updates. MacRumors reported the watchOS release, while AppleInsider documented the broader beta rollout.
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What changed in beta 3?
No major new Apple Watch feature was identified. Apple did not publish a beta-3-specific consumer changelog announcing a new watch face, redesigned app, health feature or training capability. Reporting at the time found no new features across the first three watchOS 10.5 betas.
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Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →The safest description is that beta 3 focused on unlisted bug fixes, stability and performance work intended to help Apple and developers prepare the operating system for release. Those improvements were not documented in enough detail to claim a specific battery-life, speed or reliability change. Individual battery reports from beta users should likewise be treated as anecdotal rather than as confirmed changes.
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![Apple Watch SE 3 [GPS 40mm] Smartwatch with Starlight Aluminum Case with Starlight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/31YiTby0pOL._SL160_.jpg)
- GET SMARTER HEALTH INSIGHTS—Apple Watch SE 3 is an advanced health tracker that helps you better understand your body. The smartwatch sends alerts for an irregular heart rhythm, or an unusually high or low heart rate.* You can view your overnight health tracking metrics with the Vitals app,* track your sleep score, and get sleep apnea notifications.*
- A GREAT FITNESS TRACKER—SE 3 can track your workouts in a healthy number of ways—from running and strength training to simply achieving your 10K steps a day. With real-time metrics and Workout Buddy powered by Apple Intelligence from your nearby iPhone,* you’ll hit your goals like never before.
- KEEP HELP CLOSE AT HAND—SE 3 is a smartwatch that can detect a hard fall or severe car crash and automatically help connect you to emergency services and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- WOMEN’S HEALTH INSIGHTS—SE 3 has advanced sensors that track your wrist temperature while you sleep. With this smartwatch, you can log your periods and symptoms, get period predictions, and get notified of cycle deviations.*
- GREAT BATTERY LIFE AND FASTER CHARGING—Enjoy a smartwatch with all-day, 18-hour battery life* from sunup to sundown. Then charge up to twice as fast as SE 2* and get up to 8 hours of battery in just 15 minutes.*
Apple’s official developer notes
Apple’s watchOS 10.5 release notes are SDK-oriented notes for developers, not a complete consumer changelog for beta 3. They list two resolved StoreKit issues:
- Tapping the Terms of Service button in
SubscriptionStoreViewcould cause an app to crash. ExternalPurchaseLink.open()could fail to open an external purchase URL.
The notes also cover watchOS 10.5 SDK support with Xcode 15.4. These entries are useful to developers testing watch apps, but they do not prove that beta 3 contained only those fixes or that ordinary Apple Watch owners would notice either change.
Was the Pride Radiance watch face included?
Do not attribute the Pride Radiance watch face specifically to beta 3. It became associated with the later watchOS 10.5 release cycle, particularly the release candidate and final rollout, but beta-3 reporting did not identify it as a new addition. The final watchOS 10.5 release was recorded as arriving on May 13, 2024, with build 21T575 in version-history records such as The Apple Wiki’s OTA history.
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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.
That distinction matters: later features in a software cycle should not be retroactively presented as beta-3 features without build-specific evidence.
Who could install watchOS 10.5 beta 3?
This was a developer beta, not a standard stable update automatically intended for every Apple Watch owner. Availability depended on beta eligibility and whether the paired iPhone and Apple Watch met Apple’s requirements for that testing release. The relevant watch models were those eligible for the watchOS 10.5 beta; the announcement itself should not be read as a claim that every Apple Watch model could install it.
For eligible devices, Apple’s documented installation route was:
Rank #3
![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.
- Open the Watch app on the paired iPhone.
- Tap My Watch.
- Tap General.
- Tap Software Update.
- Tap Beta Updates.
- Select the available developer beta.
Apple’s beta installation guidance explains the account and device requirements. At the time, installation guidance also required the watch to have at least 50% battery and remain on its charger during the update. Keep the paired iPhone nearby, connected to the internet and sufficiently charged.
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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteShould you install it?
Install it if you are a developer
Beta 3 made sense for developers who needed to test watch apps against the watchOS 10.5 SDK, investigate a reproducible bug or verify StoreKit behavior. A secondary Apple Watch or the watchOS simulator was preferable where practical.
Consider it only if you are an experienced tester
Experienced testers who could tolerate instability and did not depend on the watch for critical health, workout, sleep, notification or cellular functions could choose to install it. Back up the paired iPhone and important data first.
Rank #4
![Apple Watch SE 3 [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/31Gq8SToFJL._SL160_.jpg)
- GET SMARTER HEALTH INSIGHTS—Apple Watch SE 3 is an advanced health tracker that helps you better understand your body. The smartwatch sends alerts for an irregular heart rhythm, or an unusually high or low heart rate.* You can view your overnight health tracking metrics with the Vitals app,* track your sleep score, and get sleep apnea notifications.*
- A GREAT FITNESS TRACKER—SE 3 can track your workouts in a healthy number of ways—from running and strength training to simply achieving your 10K steps a day. With real-time metrics and Workout Buddy powered by Apple Intelligence from your nearby iPhone,* you’ll hit your goals like never before.
- KEEP HELP CLOSE AT HAND—SE 3 is a smartwatch that can detect a hard fall or severe car crash and automatically help connect you to emergency services and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- WOMEN’S HEALTH INSIGHTS—SE 3 has advanced sensors that track your wrist temperature while you sleep. With this smartwatch, you can log your periods and symptoms, get period predictions, and get notified of cycle deviations.*
- GREAT BATTERY LIFE AND FASTER CHARGING—Enjoy a smartwatch with all-day, 18-hour battery life* from sunup to sundown. Then charge up to twice as fast as SE 2* and get up to 8 hours of battery in just 15 minutes.*
Stay on stable software if you want new features or reliability
Everyday users expecting a visible feature had little reason to install beta 3. Beta software can cause battery drain, app incompatibility, unreliable notifications, connectivity problems or service issues. A watch with only one available device is a particularly poor candidate for experimentation.
Apple Watch beta recovery is also less straightforward than iPhone rollback. If a serious problem occurs, recovery may require official Apple support or service, so users should not install a watchOS beta assuming they can easily return to the previous stable build.
Common problems
The update does not appear
Confirm that the developer beta is enabled under Watch app → My Watch → General → Software Update → Beta Updates. Then check beta eligibility, the paired iPhone’s software, internet access, charger connection and the watch’s proximity to the iPhone.
Best Value
![Apple Watch Series 11 [GPS 42mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/41s72HIk5TL._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.
Installation stalls
Leave the watch on its charger, keep it within range of the paired iPhone and avoid interrupting the update. A temporary pause does not necessarily indicate failure.
Third-party apps stop working correctly
Developers may not have tested their watch apps against the beta. Update affected apps where possible, report the issue to the developer and use stable software if the app is important to your routine.
Nothing looks different after updating
That is expected for a maintenance-focused beta. The absence of a new interface or watch face does not mean the update failed.
What beta 3 did not include
- There was no documented major watchOS redesign.
- There was no confirmed beta-3 addition of the Pride Radiance watch face.
- iOS 17.5 features such as Web Distribution were not watchOS 10.5 features and should not be transferred into the Apple Watch story.
- The official StoreKit notes were not a complete list of every internal watchOS change.
What happened next?
Apple released watchOS 10.5 beta 4 on April 30, 2024, with build 21T5571a. The final watchOS 10.5 release followed later in the cycle. For readers interested in the final feature set rather than developer testing, waiting for the stable release was the safer choice.
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