iOS ad blockers primarily work through the content blocker API, since several years ago. An app gives Safari a blocklist (which it's responsible for updating) a

iOS ad blockers primarily work through the content blocker API, since several years ago. An app gives Safari a blocklist (which it's responsible for updating) and Safari applies that to any URIs it's asked to load. I've been using Wipr for a few years now. It's basically set and forget.