Apple Watch Blood Pressure Feature Expands to Canada and Singapore

Apple Watch Hypertension Notifications Expand to Canada and Singapore.Apple has launched its Hypertension Notifications feature in Canada, Singapore, and Bahrain. The rollout began on Wednesday, October 8, 2025. This expansion follows the feature’s initial release in the United States last month.The tool aims to help users identify potential chronic high blood pressure. It is now available in over 150 countries and territories worldwide.

How the Health Feature Works on Your Wrist

The feature is available on Apple Watch Series 9 and newer, including Ultra models. It requires the paired iPhone to be running watchOS 26. According to Apple, the technology uses the watch’s optical heart sensor.It analyzes how a user’s blood vessels respond to heartbeats. The system works passively in the background over 30-day periods. It then notifies the user if consistent signs of hypertension are detected.This provides a proactive health alert without active user input. The feature does not directly measure blood pressure or provide a reading. It also does not require any manual calibration.

Rigorous Scientific Validation Behind the Algorithm

Apple states the feature underwent extensive scientific validation. The development involved advanced machine learning techniques. Training data was gathered from studies with over 100,000 participants.A subsequent clinical study validated the algorithm’s performance. This study involved more than 2,000 participants. The findings are detailed in a 12-page document from the company.This move underscores Apple’s focus on validated health technologies. It offers a new layer of health awareness for users. The feature is not intended for individuals under 22 years old.It is also not for those previously diagnosed with hypertension. The notifications should not be used during pregnancy.

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The global expansion of this feature marks a significant step in wearable health tech. It provides millions more users with insights into a common, often silent condition. The Apple Watch continues to evolve as a key tool for personal health monitoring.

Info at your fingertips

Which Apple Watch models support Hypertension Notifications?

The feature works on Apple Watch Series 9, Series 10, Series 11, Ultra 2, and Ultra 3. It is not available on any Apple Watch SE models. You also need to be running watchOS 26.

How do I set up Hypertension Notifications?

You can enable the feature through the Health app on your paired iPhone. The setup process guides you through the necessary steps. The feature then works automatically in the background.

Does this feature give me a blood pressure reading?

No, it does not measure blood pressure directly. The algorithm analyzes pulse data for signs of hypertension. It will only send an alert if a pattern is detected over time.

Who should not use this Apple Watch feature?

It is not for people under 22, those with a prior hypertension diagnosis, or during pregnancy. The tool is designed for initial detection in otherwise unaware individuals. Always consult a doctor for a formal diagnosis.

How accurate is the hypertension detection?

Apple states the algorithm was validated in a clinical study with over 2,000 participants. It was trained on data from more than 100,000 people. The company emphasizes its rigorous development process.