I think just by my experience and the discussion, ADC’s “Nest Integration” is pretty worthless.
It basically boils down to the fact you can control your thermostat on the ADC app as opposed to the Nest app, and you can include some rules in scenes but that’s it. All you can do, one way or another, is manually set the temperature.
I don’t really blame ADC for the lack of integration though, Google has really done nothing to allow Nest to integrate into other platforms. It has almost been a year since Google announced the end of the Nest API and they promised you can do everything using Google’s APIs that you could do on Nest’s APIs but there has been next to nothing in the way of progress. I think it’s obvious Google really wants to silo Nest products and doesn’t want to play well with others.
The entire home automation sector is a bit of a mess right now because there are all these various companies running various standards and none of them want to play with others. It sucks because one company could be great at lights, while one could be great at security, and one could be great at HVAC but as of now none of them talk to each other. ADC shares blame with this too, they could open up an API (and secure it) to allow other platforms access but they haven’t and I’d venture to guess it’s not on their roadmap. ADC also keeps their automation very basic and that’s a big disappointment because it could do so much more.
I hope that ADC and others really don’t market that “sure we work with Nest” because regardless of fault I find it misleading. For ADC to claim to be able to work with at least the Nest thermostat, it should be able to do just about everything a Z-Wave thermostat could do including automation and various rules/schedules.