Ad blockers on iOS are called “Content Blockers” and can be found in the App Store. I use one called Purify. Notably the Content Blocker implementation is in t

Ad blockers on iOS are called “Content Blockers” and can be found in the App Store. I use one called Purify. Notably the Content Blocker implementation is in typical Apple form. The interface with Safari is such that Safari itself is applying a ruleset to the page, and the CB only provides the rules. That means the CB never sees the pages you’re actually browsing.