Wear OS users are met with the following message when opening Nest app on their smartwatches – "Nest is no longer supported for Wear OS."
Reported by 9to5 Google who received the following comment from Google, it just seems that no one used the app in the first place.
We took a look at users of Nest app on clear watches and found it only a small number of people used it. Going forward, our team will spend more time delivering high quality experiences through mobile apps and voice interactions.
You still get messages on your clock with the Nest app through your mobile device. Using OS users can control their thermostat with Google Assistant from any Wear OS device, check out more details here. If you are using an Apple clock, you can no longer adjust your thermostat or change home / wake mode from your watch. However, the actions you could take on your watch are available with the Nest app (available for both Android and iOS) so you can still control your devices on the go.
We would be upset, but yes, apparently no one used this.
// 9to5 Google