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Apple Heart Study

By Apple

This app is only available on the App Store for iOS devices.


The Apple Heart Study app is an innovative research study that uses data from Apple Watch to identify irregular heart rhythms, including those from potentially serious heart conditions such as atrial fibrillation (AFib). This study is being conducted in collaboration with Stanford Medicine to accelerate discovery in heart science.

- AFib is one of the most common forms of irregular heart rhythm. It can lead to blood clots or heart failure and is a leading cause of stroke. AFib affects tens of millions of people — but many of those people don’t experience symptoms, so it often goes undiagnosed.

- The Apple Heart Study uses an app designed to notify participants if an irregular heart rhythm is observed.

- The app will passively monitor your heart rate along with your heart rhythm. If an irregular heart rhythm is observed, the app will notify you.

- After the notification, you’ll receive a free video consultation on your iPhone with the study’s medical professionals for further analysis.

- The video consultation connects you with a board-certified, licensed primary care provider from American Well* - 24 hours a day, 7 days a week.

- In some cases, the doctor may recommend a BioTelemetry electrocardiogram (ECG) patch for additional monitoring. The patch will be mailed to you at no cost and should be worn for seven days. The ECG data gathered over this period will be used to determine whether AFib or another type of irregular heart rhythm is present.

- Participation in the Apple Heart Study is voluntary. After you download the app, you’ll be asked to give your consent for participation. The heart rate sensor data you provide over time will be collected by Stanford Medicine and Apple for research analysis. Apple will not have access to any information that can directly identify you.


- Requires Apple Watch Series 1 (Fall 2016 model) or later with watchOS 4 and later. The Apple Heart Study does not support the original Apple Watch.
- iPhone 5s or later with iOS 11 or later
- You must be a U.S. resident, 22 years or older, and meet other study eligibility criteria as described in the Apple Heart Study app
- You must provide your consent to participate in the study

*Doctors provided by American Well’s clinical partner, Online Care Group.

What's New in Version 1.0.1

This update includes bug fixes and other improvements.


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Customer Reviews

If I could give 0 stars I would.

Downloaded this waste of space onto my phone and watch the day it was released. The screen has not advanced beyond telling me to turn on notifications so I know when they accept me in the study. I called someone in the heart study who said I was enrolled and that’s the screen I should see. They were wrong and an idiot. Said I would get a call back and of course I didn’t. Now days later I cal again and get another useless employee telling me I will be notified when I’m accepted. Why do I need a person to tell me the same exact thing my phone is telling me. I called to get more information. These people are morons and can’t answer any questions that aren’t in the script in front of them. Will be deleting this useless app. If after a week it’s not doing anything or sending data then Apple has failed in my book.

Stop complaining it’s taking too long

“Oh nooo why hasn’t the study started? how dare they waste my seconds of time downloading it?!”

Look, I highly doubt that they are accepting every single person trying to be part of the study. They opened it to the public to apply, but that wasn’t a promise you’ll get in. My app says I am registered and I will receive a notification “when the study is ready” for me to participate. Maybe everyone will have only a few weeks a piece in the study and they’ll change out for new participants. That could mean that others have started the study before us and we will be in the next shift. None of us know how this is supposed to work...which is how a study is supposed to be to get the best data.

Stop complaining. It’s not a contest. It’s a study developed by Stanford Medicine and Apple that could be very important in future heart health education.

Be patient!

Doesn't Recognize New S3 Watch!

This app is garbage. The privacy concern is obvious: Apple knows your identity and will be able to earn a profit by selling health data linked to that identity. Worse yet, even after the latest app, iOS, and WatchOS updates of the past few days, the iOS app tells me that my phone isn't paired with a Series 1 or later Apple Watch, as required. (My brand-new Series 3 Watch is on my wrist and working!) The Watch app says to get started by launching the iOS app. Completely useless! Uninstalling!

Apple Heart Study
View in iTunes
Offers Apple Watch App for iPhone
  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 1.0.1
  • Size: 26.6 MB
  • Apple Watch: Yes
  • Language: English
  • Seller:
You must be at least 17 years old to download this app.
  • Frequent/Intense Medical/Treatment Information
  • Infrequent/Mild Alcohol, Tobacco, or Drug Use or References

Compatibility: Requires iOS 11.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, and iPhone X.

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