For OP. Reolink has a DVR and wireless type cameras.

However be careful on which cameras you get as all the wireless ones do not with the DVR. Think this is mostly the battery powered ones. Also not sure if this has changed since original purchase a few years back.

So then you trust the app enough that it provides the function you need from it? Trust doesn’t have to be an all or nothing ordeal.

No one said blindly. But why would you use the app if you don’t have trust.

Whatever the app developer recommends. Obtainium directly from the developer repo or F-Droid when they officially support it. Depends if you want the latest version sooner, then the former.

You can turn off auto-update from both.

If you are questioning if the developer is malicious, why are you using their app?

Obtainium is more so if you don’t want any middle man and know the app you are downloading. If you want more checks, I suppose F-droid will provide some.

How does Jami handle offline messages? From understanding its p2p, so both ppl have to be online right?