All devices I own can be monitored, maintained and adjusted on the device itself. I prefer that over an app that will eventually not be supported on my phone anymore or one that moves to a subscription based service. The phase-out of 3G also showed a downside of connected devices, older cars suddenly lost all their connectivity.

No I don't have house monitoring. I have a metal key that I use to enter it. When I enter the home, there is a rectangular box that I press with my finger, and it turns on the light. The A/C (that also does heating) can be set to a certain temperature with a hardwired box on the wall. That is all the tech I have at home.

With a car, I prefer a car that I can monitor on the dashboard or center console itself. Fault codes can be read over OBD with standardized equipment. I have owned cars over 15 years old that could still tell me what was wrong without needing an app or subscription.