How do I disconnect a service?
Click the plus icon at the top right of any Exist page on the web, or click on your name to go to your account settings page and then choose “Services”. Click “Disconnect” on the service you no longer want to use.
If you want data to stop coming from Apple Health, you'll need to turn this off from inside Exist for iOS.
If you want data to stop coming from Health Connect, you'll need to turn this off from inside Exist for Android.