You can link the Withings App with Apple Health if you want to. To do so, follow these steps:

1. Open the Withings App.
2. Go to Profile.
3. Scroll down to  Apps and select Health.
   
   
4. Select Activate.
   
   
5. On the next screen, you can select the data you want to share with Apple Health.
   
   
6. Select Done and you’re all set!