This app collects your health data (heart rate, number of steps, sleep analysis, glucose values, ...) from various wearable devices and securely transfer the de-identified and encrypted data for further analysis.
You can see your personal health info on your health dashboard.

It uses HealthKit to save and store your heart rate, number of steps, and sleep analysis data securely.

Apple Health® Integration

What’s New

Version 10.1.84

Added Fiber/Cognition Study
Showing last synced date for Fiber/Cognition Study
Fixed small issues in settings

Ratings and Reviews

3.9 out of 5
107 Ratings

107 Ratings

padams89 ,

New version much better

The new version is much more user friendly....4/5 because data uploading often takes longer than the prediction (15-20min instead of 5) but it’s worth the time to make a meaningful contribution.

Developer Response ,

Thank you for your feedback. We have updated the app for the phase 2 of the study. If you would like to join the study, please delete the app and reinstall the new version. We have improved the app a lot and we hope that you do not experience the previous difficulties. We hope that you will be willing to revise your review. Thanks, Stanford Signal Study Team.

jkdman123 ,

Still Broken. Not Recommended. . .

Latest version STILL crashes every time on the dashboard and takes at least 20 minutes to sync on an iPhone 12 Pro, which means you have to keep the app open on that screen and can’t use the phone. Also, not a very intuitive interface.

No response from developers when I emailed them about the abysmal performance. Have no choice but to delete this app as there are now other COVID research apps out there that sync infinitely faster and don’t tie up your phone for long periods of time.

Developer Response ,

Thank you for your feedback. The new version of the app would not crash, could you please re-install the new version. Please email us at if you still have any issues and we would be happy to help.

dave9099 ,

Good app

I had a few issues in the past that were resolved by updates. I had the same issue when installing and data loaded with the button being too low to proceed. Mine was blocked by the keyboard. I pressed home then went back to the app which resolved it.

App Privacy

The developer, Stanford University, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Health & Fitness

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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