The NightOwl application has existed since 2018 and is used to automatically switch between light/dark modes on the operating system. It is an alternative to the built in macOS automatic mode which only switches when the user steps away from the computer.
However, the application has been bought out by “TPE.FYI LLC” in late 2022 that forcibly joins your devices into a botnet for use of market research, without your knowledge (other than the TOS in small text on the download page) or express consent (this feature cannot be turned off, even when the app is quit). This is documented in their terms of service.
PiHole on a Raspberry Pi
When I’m using VPN, my pihole can’t see the traffic, and won’t be able to block any ads or analyze the traffic. Also, some browsers use their own DNS, so the pihole can’t block that traffic either.
Other than that, the pihole is a great tool to figure out what’s going on in your network. That’s how I found out that an Android phone is super noisy in my netwrok. Then I installed LineageOS+gapps, and it got better. It was still a bit noisy, so I reinstalled LineageOS, but this time without gapps and no play store. It finally got to the level I like, but unfortunately the world around me wasn’t compatible with this phone any more. :( But anyway thanks to pihole, I was able to figure out what kind of changes I need to make so that I’ll get the level of privacy I’m happy with.
Are you using the VPN locally on your device or router level?
On the device level at this point. AFAIK, my VPN isn’t designed to work on a router level.
Anyway, it makes sense that once you encrypt the traffic, the pihole won’t be able to see what’s going on.