I used to have a Honeywell wi-fi thermostat. It looked like any other thermostat you've ever seen, except you could connect it to a home hub. It was nice because you could exactly what you're describing, but you could also do it in the app.

What made it worth it was being able to turn off the air or heat when you weren't home automatically. Now all or the "AI training" garbage? Yeah, forget that. I used to work in an office with a nest and it was torture if you showed up too early if stayed a little too late.