Thermo Watch - App Store Link ($2.99)
After I bought Apple TV some time ago, I've realized that Nest's own Apple TV app doesn't support thermostat adjustments, and decided to expand my app to support Apple TV. Those of you who already have the app on iOS/Watch, can just download it to your Apple TV for free, as the app is universal purchase (purchase on one device, and it becomes free on all the other supported devices).
Those who had no previous experience with it, you can see here about the watch app and the iOS Widget component:
https://forums.macrumors.com/threads/thermo-watch-control-your-nest-thermostat.1962276/
This is what the Apple TV app looks like. As you can imagine, you switch between the thermostats by swiping left/right, and you change the temperature on the focused one by swiping up/down. I wanted to make this as quickly accessible as possible, so no other buttons are visible, or anything else selectable on the main interface. You can however press the Play/Pause button on the remote, to open the menu where you can set the HVAC mode or turn the fan on/off.
Note that you will need to install the app on your iOS device to be able to log in and authorize your Apple TV to access your Nest account. After that you can keep using the iOS Widget on your phone or iPad, but you no longer need the iOS app for the Apple TV app to function.
After I bought Apple TV some time ago, I've realized that Nest's own Apple TV app doesn't support thermostat adjustments, and decided to expand my app to support Apple TV. Those of you who already have the app on iOS/Watch, can just download it to your Apple TV for free, as the app is universal purchase (purchase on one device, and it becomes free on all the other supported devices).
Those who had no previous experience with it, you can see here about the watch app and the iOS Widget component:
https://forums.macrumors.com/threads/thermo-watch-control-your-nest-thermostat.1962276/
This is what the Apple TV app looks like. As you can imagine, you switch between the thermostats by swiping left/right, and you change the temperature on the focused one by swiping up/down. I wanted to make this as quickly accessible as possible, so no other buttons are visible, or anything else selectable on the main interface. You can however press the Play/Pause button on the remote, to open the menu where you can set the HVAC mode or turn the fan on/off.

Note that you will need to install the app on your iOS device to be able to log in and authorize your Apple TV to access your Nest account. After that you can keep using the iOS Widget on your phone or iPad, but you no longer need the iOS app for the Apple TV app to function.