Normally it blocks ads everywhere. The only case when it shouldn't do it - if you use HTTP proxy mode with Manual setup. Because currently AG cannot filter HTTPS traffic as Windows version does. I mean we can filter it on domain-level, but we don't see request URL. So if requested ads are located on a specific advertising domain like doubleclick.net - we will block it. But if ads are loaded over HTTPS from some common domain (like what youtube does) blocking it will also break the website.