ADT Tools 2 is a smartapp that I put out there for the community to add functionality to the ADT Smartthings Panel.
The release thread is here ADT Release thread
There is also additional info at ADT Tools 2 at “Things that are smart”
I would expect that is by design. ADT wants you to get their monitoring services. So if you did that then you would get a call from them to confirm the state of your home.