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Content blockers do work for 3rd party browsers AFAIK. I use Firefox on iOS and to my understanding Magic Lasso content blocker is what’s blocking the ads. I think that since the Firefox browser is really safari and the blocker is implemented at a lower level, the content blocker just works.

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No, Firefox for iOS has its own built-in ad blocker, as far as I know.

For example, iOS Chrome definitely does show ads for me on the same pages that Firefox manages to block them on, with the same content blocker iOS settings.

Thanks that’s interesting - I enabled enhanced strict tracking protection, which I thought was just related to tracking across sites. It is apparently good enough at ad blocking that I have not noticed.

AdGuard for iOS offers both Safari Content Blockers and a local VPN/DNS for 3rd party apps. The significant difference is that Safari can apply cosmetic filters, while other browsers like Chrome leave ugly placeholders where the ads would have been.

Interestingly, AdGuard for Android allows full ad-blocking + cosmetic filtering in Chrome by installing a certificate that enables local MitMing of your TLS connections. I am both impressed and creeped out by this hack and how reliable it seems to work. :)

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