Thermo Watch for Nest provides you with an Apple watch and a Nest learning thermostat, together in perfect harmony. Temperature values in the menu bar update instantly and continuously to reflect the ambient temperatures reported by your thermostats without having to open the app. Any time you change the temperature, you will hear a chime that confirms the thermostat has received and applied your command. The app supports multiple thermostats in multiple homes. Fahrenheit and Celsius are supported, with correct half-degree settings for Celsius. You can also switch between the heating, cooling, or heat/cool modes, set the Away status, or turn the fan on and off.