Adguard is NOT free. Beyond that, it is the worst plague of the modern computing age - subscription.

An ad blocker has access to extremely invasive data and Adblock wants me to pay them a subscription so they can get my PII and associate it with my browsing?

It is also not Open Source so I can't rely on the hope that someone smarter than me would have caught its dirty tricks.

I use Safari for a tiny subset of my browsing due to this gaping hole...

Ad blockers on Safari are apparently unable to block YouTube ads, due to API limitations.

I wish Firefox wouldn't excessively drain the battery on macOS, and Chrome wouldn't excessively drain personal data to Google, and Brave wouldn't excessively violate the trust of its users.

As of today, there's not a single browser on macOS that I don't strongly dislike. Looks like Safari won't improve soon.

Is it free? I'm looking at the Mac download now and it says that it's a 14-day trial with a monthly subscription afterwards, and I'm not entirely happy with relying on a subscription-based service.

AdGuard runs an Electron app in the background, though.