Apple has teamed up with Stanford Health to launch the Apple Heart Study app. It’s a research study on irregular heartbeat. The app will allow the Apple Watch to collect data to irregular beat rhythms and will also proactively notify users when they might be experiencing atrial fibrillation. The app will be available to users who are 22 years or older.

Apple previously announced this study during the release event of the Apple Watch Series 3. It was working on the process with the FDA at that time.

The Apple Watch will rely on green LEDs used with light-sensitive photodiodes to calculate heart rate and rhythm by detecting the amount of blood that flows through the wrist. The sensor collects data from four different points on the wrist and uses that data to identify an irregular rhythm.

Those who participate in this study will receive a notification on their Apple Watch and iPhone if an irregular rhythm is identified. They will also receive a free consultation with a study doctor and for additional monitoring, an electrocardiogram peripheral.

“Working alongside the medical community, not only can we inform people of certain health conditions, we also hope to advance discoveries in heart science,” said Apple Chief Operating Officer Jeff Williams.

Filed in Apple. Read more about Apple Watch.

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