This app lets you use Siri and Apple Watch to control your Nest Thermostat!
It also lets you see HomeKit Thermostat info on the Watch Complications.

Apple Watch, Nest Thermostat, and Siri. Together at last.

* The app has Siri Voice shortcuts for seamless Siri control of your Nest, from the iPhone, Watch, iPad, and HomePod. It fully supports Apple Watch LTE, and can work when the iPhone is not around - as long as the watch itself has internet access (either LTE or WiFi).

* The app lets you monitor and control HomeKit thermostats like Ecobee, and functions largely the same with them as it does with Nest, except for the Siri Shortcuts functionality which is not needed with HomeKit. It lets you see your thermostat info on the Watch complications, and control it using the iOS widget.

• Using Siri voice shortcuts you can control many aspects of your Nest, such as instant activation of heating or cooling, setting the temperature by saying how many degrees you want to set, increasing/decreasing the temperature, and setting the Home/Away state. Thanks to Thermo Watch, It's all finally just one casual "Hey Siri" away, all with informative visual and verbal feedback.
• From the watch face, tap on the Thermo Watch complication to open the app. Spin the Digital Crown, or Swipe up/down to adjust the temperature. You can start adjusting the moment the app opens.
• On your iOS device you can press and hold onto the app icon to open a quick popout menu, you can swipe to the notification center to adjust the temperature on the Widget, or you can just open the app. Again, you can start adjusting the moment the controls appear.
• From your Apple TV, open the app, and swipe up/down on the remote to change the temperate.

The app is fully functional with an initial purchase. The in-app purchases are used only for giving a tip to the developer.

The app will let you know with a chime and a tap, that the thermostat has received and applied your command.

Monitor your Thermostats and Home/Away status right from the watch face, using complications that update in the background, without having to launch the app.

You can use Siri on your iPhone, Watch, iPad, or HomePod to control any of your thermostats. Record phrases that make most sense to you, such as "Start Heating" or "Make it Cooler". If you have multiple thermostats you can control them individually, by saying for example "Start Heating Upstairs" or "Start Cooling the Living Room".

Visit website for the detailed instructions of Siri operation.

Set Geofence around your home to reliably set the Home and Away state when you come and go.

The app supports multiple thermostats in multiple homes - just swipe left and right on your Watch screen to access them, or see them all at the same time in the iOS Widget and the app. Fahrenheit and Celsius are both supported.

Beyond that, you can press the Watch screen firmly for additional functions, like switching to a heating or cooling mode, setting the away status, choosing the active temperature sensor, or turning the fan on and off.

While the app's minimalist looks betray the simplicity of its operation, what they don't show is the amount of planning, design, development and refinement that went into it, ensuring it becomes something that is enjoyable to use and experience.

Thermo Watch does not collect any of your data. Your login information, thermostat settings, and any activity - all of it flows exclusively between your devices and Nest. Author of Thermo Watch does not receive any of it, at any point.
This app and its developer are unaffiliated with Google Inc. or Google Nest. Nest is a trademark of Google Inc.

What’s New

Version 15.6

* Faster watch app data sync for most users.
* Watch app can now be manually authorized from the iOS app.
* The app can now correctly detect when the thermostat is offline.
* Improved reliability of the Geofence functionality. Huge thanks to David for relentlessly testing this!
* Fan can be configured to run longer than before in the app settings, independently for the iOS app, and the Watch app.
* Correct display for the heat and cool temperatures on the new widget, when in Heat-Cool mode. Thanks to everyone who reported this!
* The app will now warn if the "Shortcuts" app is not found, when trying to add Siri Shortcuts.
* Fix for the intermittent Siri shortcuts problem, that affected some users.
* Fix for the rare problem where thermostats would sometimes not be found, until the app is relaunched.
* Fix for the rare "Host Not Found" problem, when trying to change the temperature.
* Fix for the Tap to Change Temperature functionality in the watch app.
* Fix for the problem where turning on the fan would disable fan schedule for some users.
* Fix for the extremely rare problem with the new widget not working, due to the missing humidity value. Thanks to Dave for helping me troubleshoot this!

Previous major updates:
* Home Screen Widget on iOS 14.
* Support for the newest Nest Thermostat.
* You can sign in with a Google or a Nest account to both the iOS app, and the Apple TV app.
* You can save both the Google account and Nest account API Key from the app menu. As usual, it's advisable to do this.
* Watch app can now display temperatures from Nest temperature sensors. To do this, press the watch screen firmly.
* Tip Jar added to the app menu. If Watch Cam has changed your home experience for the better, please consider giving a small tip.

Ratings and Reviews

4.0 out of 5
300 Ratings

300 Ratings

Bryansince1981 ,

Not working for me, yet...

Marko replied to my response immediately, and knew the issue right away, I’m brand new to Nest Thermostat and Google changed a few things. Although he was unable to resolve it, he was very willing to refund me the purchased price. He gave me a very detailed reason why (the Google/Nest transition) it isn’t working. He is working on a solution to the problem, and hopefully will have it resolved soon. He was very pleasant to work with, and again, I love the Camera app he created. Just waiting for the bugs to be removed for me. Overall, great developer, very professional, and a pleasure to work with. (I would give a 5 because of his help, but the app still doesn’t work for me)

Previous - When I try and log in through the app on my phone, using my nest account, it says I must use the main users account information, which I am. The camera app they have works well but this doesn’t work.

Developer Response ,

Hi Bryan. The new 15.0 version of the app should be working fine for you. I apologize for the wait, please give it a try.

wulfeman ,

App name says “For Nest AND Ecobee” but no Ecobee integration found

I started with a couple of Nest Thermostats in my home, but after Google stopped authorizing keys for new app integrations & a need to access with some new software, decided to use Ecobee for the rest of my house & will eventually replace Existing Nest with Ecobee. Unfortunately, I can not find any way to link Ecobee account to the app. I’ve searched the developers website and find plenty of information on linking to Nest, but not a word on Ecobee. If you are not supporting Ecobee, then remove it from the app name.

UNFORTUNATELY, while the developer states that I only need to add the thermostats to my HomeKit configuration, then connect through the app, it doesn’t work. I already had all of my thermostats connected to HomeKit. I connected to HomeKit, when I installed each Thermostat. (They all show up in the Home app, along with the remote sensors) The ThermoWatch app doesn’t give me an option of connecting to my HomeKit Devices, the closest option is to Authorize my AppleTV (HomeKit Hub). That doesn’t work either. Those instructions refer to connecting to a Nest Thermostat. Running the AppleTV app, when selecting this option on the phone, doesn’t do anything at all.

Developer Response ,

Hi Wulfeman. The Ecobee thermostats are supported in this app when they are added to your HoneKit setup. Then you just choose the “Connect to your HomeKit Thermostat” from the app’s first screen, and they will show up in the app. You can then control them from the iOS app, the Widget, Apple Watch, and Apple TV.
Please note that with this app you can choose to control Nest thermostats, or HomeKit thermostats, but not both at the same time.

b_cohen ,

Great Functionality!

The app is great! The app is very functional and gives me a great status view and control of my two Nest Thermostats! Some of my favorite features are: 1) the iOS widget provides me a fast way to control the temp, home/away status, humidity, and ambient temperature for my upstairs and downstairs thermostats. 2) Apple Watch widget gives me the same control as the iOS widget but it also has a GREAT complication showing me the cool/heat status, on/off status, ambient temperature and humidity. [the Nest Watch app doesn’t have this]. 3) tvOS app also gives me all the above control on my AppleTV [the Nest TV app doesn’t have this-in fact, you can’t control your thermostats on the AppleTV Nest app. It’s only for the Nest Cam].

With all that said, I’ve reached out to the developer a few times to provide suggestions and issues and they have been VERY responsive! I would recommend this to anyone who wants a really cool control and UI for their Nest Thermostats.

App Privacy

The developer, Marko Radakovic, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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