[saagarjha]

> as well as other apps that use web views though

Actually, they only work in the specific case of SFSafariViewController. This isn't available for any old webview to implement.

[tinus_hn]

I was under the impression that Firefox Focus blocked ads in some other apps as well but that doesn’t appear to be the case indeed, at least not in Chrome.

[saagarjha]

Firefox Focus ships with a content blocker extension, I think, so it can block ads in Safari and third-party apps using SFSafariViewController. Chrome uses a webview, so the content blocker won't work there.