IronFox is the community-maintained successor to Mull, the hardened Firefox-based browser that shipped with DivestOS before that project was discontinued. It strips telemetry and Mozilla data-collection hooks from Firefox for Android and ships with content blocking enabled by default.
Our take
If you used Mull and want to stay on a hardened Firefox for Android, IronFox is the natural continuation. The hardening patches and privacy-focused defaults give it a meaningful edge over vanilla Firefox for Android, and the open license means the community can audit and maintain it independently. The main catch is a small developer base: a project this size depends on sustained volunteer effort, so watch the release cadence before committing fully. Power users and GrapheneOS or CalyxOS runners are the obvious audience; casual users may find the configuration surface more than they need.
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