I need to get an app that can be left to record continuously for days at a time. Essentially turning an old android phone into a security camera. I don’t really care if the video is stored locally or remotely.
My downstairs neighbour has started complaining about excessive noise coming from our apartment, including while everyone in the apartment is asleep. So I need to have something recording continuously where I can clip out the complaint and the hour leading up to it, to prove that whatever they’re hearing isn’t us. Ideally it would show the noise in dB and the time. They have no legal basis for throwing us out, but I’d like to provide irrefutable evidence that they are delusional.
Thanks in advance for your help.


I never had a need for such app, but I guess if you search for “CCTV” in the store you will find a few. That one looks promising for example.
Just keep in mind that videos quickly grow in volume, so you need a fair amount of free space to keep recording for the whole night.
I doubt it shows noise in dB, but you can try to start some app for measuring dB and record the screen instead (?)