1. Open the Withings App.
2. Tap Profile.
3. Tap Partner apps.

   

4. Tap Connect under Nest.

   

5. Tap Link with Nest.

   

6. Tap Continue.

   

7. Log in to your Nest account.

   

8. Select the Nest Thermostat you want to link to your Withings Aura and tap Link with Nest.
   
   

You can unlink your Nest Thermostat and your Withings Aura anytime you want from your Profile.