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.
It is not. But you can buy a cheap lifetime family account for Adguard on stacksocial for $20/$29. (not affiliated, but extremely happy user, been using it for years)
https://apps.apple.com/us/app/adguard-for-safari/id144014725...