ECG app does not show

Thanks for asking about the new ECG feature.

Check here for availability in your region: ECG

ECG requires the current non-beta version of iOS and watchOS. For additional help with the ECG feature on your Apple Watch, take a look at these articles.

Heart rate notifications on your Apple Watch - Apple Support

Taking an ECG with the ECG app on Apple Watch Series 4 or later - Apple Support

If you have any other questions, please reach out to our team here: https://apple.co/HeartFeatures. If you believe that you are experiencing a medical emergency, please dial your local emergency services.

Take care.

Do you live in a country where the ECG is allowed by your government?

On around 50 countries have allowed the ECG app.

ASC - Late 2012 Mac mini, macOS 10.15.7; Watch, series 5 GPS/cellular, watchOS 7; iPad Pro 2nd Gen, iPadOS 14.0.1; iPad Air 2, iPadOS 14.0.1; iPhone 8+, iOS 14.0.1; TV 4th Gen, tvOS 14  HomePods, audioOS 14 and Airport Express w/ Airplay 2

What version of watchOS is installed on your watch?