Fennec F-Droid

Free plan Open source Android

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What Fennec F-Droid is

Fennec F-Droid is a free, open-source Android web browser based on Mozilla Firefox. Its build removes Mozilla’s proprietary components and telemetry while retaining Gecko, Firefox add-ons, and improved tracking protection. Private mode opens with one tap. You can adjust the start-screen layout, move the navigation bar to the top or bottom, and use a dark theme, tab collections, and picture-in-picture mode. Firefox Sync synchronizes tabs, bookmarks, passwords, and other data across devices. The app is licensed under the Mozilla Public License 2.0 and listed builds require Android 8.0 or newer, with arm64-v8a, x86_64, and armeabi-v7a packages. F-Droid recommends installation through its client because direct APK installation lacks update notifications and is described as less secure. Although telemetry is removed, the browser still connects to Mozilla services that can track users. Older releases have failed reproducibility attempts.

Who it suits

It suits Android users seeking an open-source Firefox-based browser with add-ons, synchronization, and privacy controls. Check the Android requirement and Mozilla-service tracking limitation before installing.

What it does well

Free plan and open-source license
Large add-on collection, including ad blockers
Firefox Sync works across multiple devices
One-tap private mode
Customizable navigation and start screen

What to know first

Requires Android 8.0 or newer
Still connects to trackable Mozilla services
Direct APK installs lack update notifications
Older releases had failed reproducibility attempts

Plans

Plan	Billed and limits	Price
Fennec F-Droid	Android 8.0 or newer · Android app	Free

As f-droid.org lists them, read 11 Oct 2026. The maker's own page has the final word.

Verdict

Fennec F-Droid provides a Firefox-derived Android browser with extensive add-ons, sync, and customization at no cost. Its Mozilla-service connections and installation caveats matter for privacy-focused users.

Facts from Fennec F-Droid's own pages

Android requirement: The listed builds require Android 8.0 or newer. · f-droid.org, 11 Oct 2026
Available architectures: The listing provides Android builds for arm64-v8a, x86_64, and armeabi-v7a. · f-droid.org, 11 Oct 2026
Browser engine: gecko · f-droid.org, 19 Sept 2026
Build changes: Its build removes proprietary bits and telemetry from Mozilla Firefox. · f-droid.org, 11 Oct 2026
Build provenance: The listed APKs are built and signed by F-Droid and are stated to correspond to published source tarballs. · f-droid.org, 11 Oct 2026
Cross-device sync: Yes · f-droid.org, 19 Sept 2026
Customization: Users can customize the start screen layout and place the navigation bar at the top or bottom. · f-droid.org, 11 Oct 2026
Extensions: It offers a wide collection of add-ons, including ad blockers. · f-droid.org, 11 Oct 2026
Extension support: own_store · f-droid.org, 19 Sept 2026
Free plan: Yes · f-droid.org, 19 Sept 2026
Installation and updates: F-Droid recommends installing through its client because direct APK installation does not provide update notifications and is described as less secure. · f-droid.org, 11 Oct 2026
License: The app is listed under the Mozilla Public License 2.0. · f-droid.org, 11 Oct 2026
Open source: Yes · f-droid.org, 19 Sept 2026
Other features: The browser includes a dark theme, tab collections, and picture-in-picture mode. · f-droid.org, 11 Oct 2026
Supported platforms: mobile · f-droid.org, 19 Sept 2026
Privacy limitation: Despite removing telemetry and proprietary bits, the app still connects to Mozilla services that can track users. · f-droid.org, 11 Oct 2026
Private mode: Private mode is available in a single tap. · f-droid.org, 11 Oct 2026
Product: Fennec F-Droid is a web browser based on the latest Mozilla Firefox release. · f-droid.org, 11 Oct 2026
Reproducibility: The F-Droid verification page lists failed reproducibility attempts for older releases, including versions 68.8.0, 68.4.1, 63.0.2, 57.0, 51.0, and 50.1.0. · verification.f-droid.org, 11 Oct 2026
Sync integration: Firefox Sync can synchronize tabs, bookmarks, passwords, and other data across multiple devices. · f-droid.org, 11 Oct 2026
Tracking protection: The listing says the browser includes improved tracking protection. · f-droid.org, 11 Oct 2026