[rever]

One heads up and kind of a correction, for users that want to stick to Safari on iOS (myself being one of them) after installing Firefox Focus on iOS, go to iOS Settings -> Safari -> General section "Content Blockers" and toggle on for "Firefox Focus"

Then ad blocking is on (:

[briandear]

You can also use Crystal.

[zjs]

From the article, Crystal also participates in eyeo's Acceptable Ads program.