i have something called passiv living, I had it installed by an energy supplier a few years ago and while it is not as advanced as nest or others, it does the job.
I can program it via the app, or just use alexa to turn it on and off, which is the most useful. Used to be more useful when I sometimes did overtime at work as I could just turn it on 30 minutes or so before I leave work . Now I don;t do overtime, i could set it at set times.
i did think about replacing it with something different, it is not the nicest looking unit and the hub it pretty large, and it would be easy enough to replace as all the cables are there. But at the end of the day is it really worth paying out for something that is to be honest doing what mine is already doing?