I searched and could not find anything here. Is there an app or some viewer to see all the recent activities? For example a list of all sensors and the last time they were active (last time Door was open, last time there was activity in a room…). This would help to see the whole house at a glance and what doors are open or what time they were opened and time of last activities in different areas …
There isn’t anything in the official features, but there are several different ones that community members have created and shared. As @johnconstantelo mentioned, “simple device viewer” is probably the most popular right now, but there are a couple of others that have slightly different features that you can look at as well.
The fastest way to find these is probably to look on the quick browse lists in the community – created wiki, look in the smartapp section, and then look on the list called “wellness check.”
If you haven’t used custom code before, it’s pretty straightforward. Basically you will copy the author’s code and paste it into your own account. Here is the FAQ for that process ( this is a clickable link)