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MyHeart Counts

By Stanford University

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


Apple’s new ResearchKit allows you to participate in important medical research studies easily through your iPhone. Stanford Medicine invites you to join the MyHeart Counts study to improve our understanding of heart health. The MyHeart Counts app is a personalized tool that can help you measure daily activity, fitness, and cardiovascular risk. It can also help you better understand your own heart health and contribute to our understanding of how to keep hearts healthy around the world. Join our research effort and make your heart count today!

The app can help you measure your activity through the sensors in your iPhone or the Apple Watch, or any wearable activity device linked to Apple Health App. If you are able, you can also do a walking fitness assessment. Plus, using your cholesterol results and blood pressure, the MyHeart Counts app will provide a calculation of your risk for future heart attack or stroke, as well as a relative “heart age.” By helping you track your activity levels and giving you feedback, we aim to help people be more informed and empowered in their health. We may also ask you to test different approaches to help you be more active so we can understand how mobile apps in the future can help prevent heart disease.

Key Features:

Record and track your:

• Physical activity through your iPhone or a Apple Health App-linked device
• Fitness level, if you are able, through a 6 minute walk test
• Risk score for heart disease or stroke, and your corresponding “heart age”

Receive reminders and notifications about:
• Your activity and sleep
• Surveys on Physical Activity Readiness and other health factors
• Entering blood pressure and cholesterol levels to calculate your risk score

Get educated:
• Learn about your activity level and walking fitness
• Learn about your risk factors and how to improve
• Links to learn about heart disease and stroke and the American Heart Association’s “Life’s Simple 7” guide to heart health

To join the Stanford MyHeart Counts research study on heart health, you need to:
• Be 18 or older
• Reside within the United States, United Kingdom or Hong Kong
• Be able to read and understand English

Install the app today and learn about your heart, help research, and join together in the fight to stop heart disease!

Continued use of GPS running in the background can dramatically decrease battery life.

What's New in Version 2.0.2

Thank you for updating to version 2.0.2 of MyHeart Counts! We updated the app to support iOS 11 and fixed a couple bugs to harden data transfer. If you are a returning user, you will be offering coaching again; please keep using the app until you receive your Coaching Completion Trophy. We hope you enjoy and thank you for contributing to heart health research.

iPhone Screenshots

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Customer Reviews

Killing battery , activity % do not match up

The battery life has gotten much worse under iOS 10. Why is this app using over 25% of my power in 15 hours just running in the back ground?
Why from one day to the next walking about he same number of steps is the percentage of activity so different? One day 23% shows and the next day almost the same number of step it shows 12%...
May have to leave the program because of the battery issue..

Will not carry over information to a new iPhone.

Super battery hog. This app, if left open, will eat your battery horribly fast.

I would hope that participation in the study would not end just because I buy a new iPhone but the data doesn’t carry over via iCloud. All that info is just gone and that doesn’t make any sense. It happened a couple of months ago on a 7 Plus when I had to do a reset. That’s not good.

Data for the good guys

It’s easy to use and could provide data to allow improvement in healthcare. Knowledge is power to make changes. Everyone should help. It’s easy !

MyHeart Counts
View in iTunes
  • Free
  • Category: Medical
  • Updated:
  • Version: 2.0.2
  • Size: 108 MB
  • Language: English
  • Seller:
You must be at least 17 years old to download this app.
  • Frequent/Intense Medical/Treatment Information

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone and iPod touch.

Customer Ratings

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