Alternatives to IronFox

Hardened Firefox fork for Android, successor to DivestOS Mull. The listings below can replace it for an important use case. Each note says what changes if you switch.

Replacements

Listings that take over the same core job as IronFox.

  • Firefox

    The main browser not built on Chromium, with tracking protection turned on by default.

    FreeOpen sourceWindowsmacOSLinuxAndroidiOS

    Firefox is Mozilla's own Gecko browser on Android, iOS and desktop, with tracking protection on by default but without IronFox's hardened defaults or bundled uBlock Origin.

  • Cromite

    A hardened Chromium fork for Android, Windows and Linux with ad blocking and Google services removed.

    FreeOpen sourceWindowsLinuxAndroid

    Cromite swaps the Firefox engine for a hardened Chromium fork with ad blocking compiled in, runs on Android 10 or later, and also offers Windows and Linux builds.

  • Brave

    A Chromium browser that blocks ads and trackers out of the box, with no extension to install first.

    FreemiumOpen sourceWindowsmacOSLinuxAndroid

    Brave moves you to Chromium with ad and tracker blocking on by default across Android and desktop, but it also ships a crypto wallet, rewards programme and AI assistant.

  • DuckDuckGo Browser

    Privacy browser with tracker blocking, cookie pop-up handling and one-click data clearing.

    FreeOpen sourceWindowsmacOSAndroid

    DuckDuckGo Browser is an Apache-2.0 privacy browser with tracker blocking and one-click data clearing on Android, though its extension support is far narrower than Firefox's.

  • Tor Browser

    A hardened Firefox that sends every page through the Tor network, so the site sees an exit node instead of your address.

    FreeOpen sourceWindowsmacOSLinuxAndroid

    Tor Browser keeps a hardened Firefox base on Android but routes all traffic through the Tor network, adding anonymity at the cost of much slower browsing and more captchas.

  • Firefox Focus

    A private mobile browser from Mozilla that blocks trackers and erases history with one tap.

    FreeOpen sourceAndroidiOS

    Firefox Focus is Mozilla's private mobile browser that blocks trackers and erases history with one tap, so logins and history are not kept between sessions.

  • Vanadium

    GrapheneOS's hardened Chromium browser and system WebView.

    FreeOpen sourceAndroid

    Vanadium replaces Gecko with a hardened Chromium build that also provides the system WebView, but it is intended for GrapheneOS and has no extension support.

  • Waterfox

    A Firefox build with telemetry stripped out, ad blocking and encrypted DNS turned on from the start.

    FreeOpen sourceWindowsmacOSLinux

    Waterfox is a Firefox build with telemetry removed and ad blocking and encrypted DNS on by default, offering Android and desktop builds from one small team.

Also worth comparing

These listings name IronFox as their own alternative, so the relationship runs both ways.

  • Aloha Browser

    A privacy-focused web browser for mobile and desktop with a built-in free VPN and ad blocker.

    FreemiumProprietaryAndroidiOS

    IronFox is an open source hardened Firefox fork for Android with uBlock Origin built in, so the engine changes to Gecko, there is no VPN and no iOS build.

  • Kiwi Browser

    Android Chromium fork that runs desktop Chrome extensions on mobile.

    FreeOpen sourceAndroid

    IronFox is a hardened Firefox fork for Android with uBlock Origin built in, but its hardened defaults break some sites until exceptions are made.

  • Samsung Browser

    Chromium-based Android browser with content blocker extension support.

    FreeProprietaryAndroid

    IronFox moves to a hardened Firefox fork with uBlock Origin built in and no configuration needed, though its hardened defaults break some sites until exceptions are made.

Similar software

Related functionality, not a direct replacement.