Q: Apple Watch - heart rate app has disappeared?

Go to apple watch app on iPhone click on app layout look for heart rate app

Click on that if its not there look in watch apps store .

Cheers

Btian

Hi

If you have not yet done so, update your iPhone and Apple Watch to the latest software, starting with your iPhone:

• Update the iOS software on your iPhone, iPad, or iPod touch - Apple Support
• Update the software on your Apple Watch - Apple Support

Under the latest version of watchOS, the Heart Rate app can then be accessed:

• From the watch face, by adding the Heart Rate complication:
  • Change the watch face on your Apple Watch - Apple Support

• From the Dock:
  • To add the Heart Rate app to the Dock:
    • On your iPhone, in the Watch app, go to: My Watch (tab) > Dock > Edit (upper-right) > add Heart Rate from the list of apps.
  • To open the app from the Dock:
    • When viewing the time on your watch, press the Side button once, then swipe between apps.
  • More information:
    • Switch between apps using the Dock on your Apple Watch - Apple Support

• From the Home screen:
  • When viewing the time on your watch, press the Digital Crown (top button) once, then tap on the Heart Rate app.

More information:

Your heart rate. What it means, and where on Apple Watch you’ll find it. - Apple Support