It connects to Google Home relatively well but still missing some functions if you don't install the Honeywell app. Personally, I am not a fan of having multiple apps to control every specific device in the home/work/car/etc...
I wish the thermostat was automatic (Heat/Cool) instead of having to constantly babysit it when temperatures fluctuate daily between 10C and 30C.
I have two of these, one for each zone, the first one works perfectly. The second one was far quicker to install (learning curve, or luck), but it works on it's own by not following the schedule and not turning on at the set points.
Could not get connected to my old android. Only was able to connect when I purchased an iPhone a year later. It was not at all user friendly but it certainly is convenient.