* Nest Owners, please note that this app will work for you if you are on a Nest account (even if you use a Gmail email to log into it). In that case, it lets you log in even after the September 1st 2019. Right now it does not support login with a new Google account. Support for Google accounts is coming soon. Note also that if you are on a Nest account, migration to Google account is not mandatory.

* The app has Siri Voice shortcuts for seamless Siri control of your Nest, from the iPhone, Watch 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.

• Using Siri voice shortcuts you can control many aspects of your Nest, such as instant activation of heating or cooling, direct setting of your favorite temperatures, 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 firmly 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 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, 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.

The goal was to make a product hat would not look out of place next to one of the apps bundled with the Apple Watch.

Please note also that this app can't work with Thermostat E with Heatlink, sold in Europe.

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.

What’s New

Version 12.5

* This app allows new users to log in and control their Nest Thermostats - as long as they are on a Nest account, and not on a Google account. For Nest account users (even if Gmail email is used to log in), the app will be fully functional: Siri control of your thermostat, Watch App, iOS Widget, Geofencing. It all works. Google account support is coming soon.

Version 12.5
* New iOS13-only Siri shortcut - "Set Mode" added. This shortcut will have Siri ask a followup question for what HVAC mode to set. In the Shortcuts app, this shortcut can be preconfigured to set a specified mode. It can also be configured to accept the output of the previous action as the mode input. Some of the valid mode phrases are "Heat", "Cool", "Heat and Cool", "Heat mode", "Heating", "Eco mode", etc.

* Fix for the layout being cut off on the Seres 4 and 5 Apple Watch for users with multiple thermostats.

* Fix for the app crashing when opening the login page for some users.

Version 12.4
* Dark Mode support in iOS13, both in the app and the Widget. Siri Shortcuts and Geofence panels are presented in a nice looking popover card view under iOS13.

* New iOS13-only Siri shortcut - "Set Target Temperature" added. This shortcut will have Siri ask a followup question for how many degrees to set. In the Shortcuts app, this shortcut can be configured to set a specified temperature, so that way you can have as many "Set Favorite" temperatures as you like. It can also be configured to accept the output of the previous action as the temperature input, replacing the old and inelegant "Clipboard to Target Temperature" shortcut.

Ratings and Reviews

3.8 out of 5
155 Ratings

155 Ratings

Praneet ,

Good Concept, but Unintuitive

While this app is an excellent idea, especially with the Siri shortcuts, the fact I haven't given this 5 stars is because the shortcuts don't work for me. With no instructions on setup, I assume it should be a simple connect-and-play setup. However, after trying multiple voice shortcuts, the only response I get is "Sorry, there was a problem with the app." And the lack of any instructions makes troubleshooting troublesome as I'm not sure if the issue is being caused by a missing setting on my device or a bug in the app.

Developer Response ,

Hi Praneet. Please refer to instructions at:
You can see how to set everything up there, and some limitations you have to keep in mind. Some quick pointers: Thermostat can’t be in the Off mode - I suggest using Eco mode instead when you want to manually turn the system off. “Set favorite temperature” shortcuts can’t work In the mixed Heat/Cool mode. To setup the shortcuts, press the small Siri circle button that’s on the left side of your thermostats in the iOS app. Then select the shortcuts you wish to create, and record voice phrases for them. Contact me at if you need any help or troubleshooting. (I’ve edited this response to avoid spreading now outdated information about the app’s limitations)

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.

IndubitableTurtle ,

Outstanding App and Awesome Developer!

I don't usually write app reviews, but I was really impressed with this app and developer. Clearly a lot of thought and work has gone into this app, and there's a surprising amount that it can do. The Siri shortcuts are amazing!

I initially had an issue with Siri encountering an error when trying to complete this apps shortcuts, but I contacted the developer and got a quick response with some troubleshooting tips, which quickly solved my issue. It turned out to be that my Nest was set to the mixed Heat/Cool mode, which is not supported for Siri Shortcuts (fine by me, I just left it in that mode because I'm lazy). After setting it to Cool via the official Nest app, I was then able to ask Siri to make it two degrees cooler and promptly hear the fan turn on.

Very impressed with the quality of this app, the value for the price (I would have happily paid $9.99 for this app), and the quick developer response. Oh, and I haven't even tried it on my Apple Watch yet, so I'll update here when I do.

If you have any issues, please reach out to the developer, he sorted my small issue and had me up and running in no time!


Marko Radakovic
60.3 MB

Requires iOS 9.0 and watchOS 3.0 or later. Compatible with iPhone, iPad, and iPod touch. Apple TV.



Age Rating
This app may use your location even when it isn't open, which can decrease battery life.


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