Very happy with our Wi-Fi thermostats. They are easy to connect to the app and easy to control and schedule. My only wish is that the schedule capability had more available time periods. I believe you are limited to four, and we would like to have additional time periods. But they work very well.
I really like being able to control the heating/air conditioning from my phone! The only thing I miss from my previous thermostat is the "auto" setting. This meant that I could set temperatures for both hot and cold and the system would switch itself.
I left the house and realized I'd forgotten to turn the system off. I was able to do it remotely! :)
Can't accurately measure temperature. GPS boundary feature goes on and off without reason affecting operation. App is limited in scope and lacks basic features. There's no control over operation of AC unit. Have to manually turn it on and off to compensate for inaccurate temperatures.