Which Mozilla mobile browser is designed as a privacy-focused browser and ad blocker? Firefox Focus. It is a free, open-source mobile browser for Android and iOS that blocks many online trackers by default.
Firefox Focus began as Focus by Firefox, an iOS tracker-blocking application released in December 2015. At first it worked alongside Safari rather than acting as a complete standalone browser. Mozilla developed it into a minimalist browser in 2016, while retaining its content-blocking purpose.
The browser uses Disconnect block lists to identify trackers, including advertising, analytics, social, and content trackers. Users can inspect the categories detected on a page, and tapping the trash icon clears the current session’s browsing data. These features make Focus especially suited to quick, privacy-conscious browsing.
Firefox Focus is not the same product as standard Firefox, which offers a broader feature set and optional tracking protection. It is also distinct from Firefox Reality, Mozilla’s discontinued virtual-reality browser. In German-speaking markets, the Android version is called Firefox Klar to avoid confusion with the FOCUS news magazine.