Adguard pro does this. Dns level blocking and also safari extension.

No, i mean the only effective way to block ads on ios is with adguard pro dns protection, covers the whole OS not just the browser. Disables ads in apps, games, etc. Will affect games who give you the option to watch an ad to get free stuff since they won't be able to connect to the ad server. As far as i know only safari has extension and adblock support from the browser side.