At first it was working fine. Now that I've added a Nest camera a few years ago, it's been on a steady decline. It fails to notice objects moving directly below or in front of it (people, cars, etc), as it's supposed to do. On numerous occasion when returning home and reviewing the timeline, I must have mysteriously appeared in my home undetected. As far as controlling the Nest thermostat settings via your phone, then this is a good app. If connected with the Nest camera, it's useless.