Is SlimBook safe?

SlimBook provides a clean, ad-free Facebook feed by wrapping Facebook's lightweight mobile web client with real-time content filtering. Features: • Removes ads, sponsored posts, stories, and reels • Hides posts from unfollowed pages and unjoined groups • Filters "People you may know" and other suggestions • Post age filter — hide posts older than a chosen threshold • Author and group management —…

Developer: Mark Retallack
Category: Internet
Earliest archived version: 09 Sept 2026
License: MIT (per F-Droid metadata)

02 / Release notes

Release notes from F-Droid

18 Oct 2026

1.2.1

Fixed: header back arrow and search icon were unresponsive on Android 15 Facebook's page header was being drawn underneath the system status bar, so taps on the back arrow and search icon were going to the system bar instead of the page. This affected Android 15 devices after the previous release.…

Full notes →

14 Oct 2026

1.2.0

Auto-hide stats badge when typing in comment boxes or composers • Fix Save Image in photo viewer (saves directly to Pictures/SlimBook/ with completion notification) • GitHub Actions CI workflow integration for build, lint, and unit tests

Full notes →

09 Sept 2026

1.0

• Real-time ad and sponsored content filtering • Page, group, and non-friend post filtering • Post age filter • Author and group management • Background notification polling • Messenger support • Photo upload support • Debug tools (highlight mode, DOM dump, console log)

Full notes →

03 / Package identity

Technical fingerprint

Application IDuk.org.retallack.slimbook

Latest APK SHA-256b6f4ea0b7f71d03941298e6b663ca8fbeebdf5900f6349fcd5d76b6d00cc69f1

Signing certificate8C:BA:8D:1B:DA:58:6D:65:14:49:34:53:76:93:F4:53:97:AC:A0:45:34:45:EF:5E:DE:C8:83:88:BD:4D:08:55

MIN ANDROID26TARGET34ARCHITECTURE

04 / History

Archive history

4 versions in WIKI archive: earliest 1.0 (09 Sept 2026), latest 1.2.1 (18 Oct 2026).

No change in android.permission.* between 1.2.0 and 1.2.1.

05 / Version archive

Documented releases

4 TOTAL

VersionReleasedAndroidArchitecture

1.2.118 Oct 202626+→1.2.014 Oct 202626+→1.1.003 Oct 202626+→1.009 Sept 202626+→

06 / Safety & access

Safety verdict

Authentic — file hash matches the source indexNo ads or tracking flagged by the source

IntegritySHA-256 verified vs source

SourceBinary repo · fdroid

Permissions10 declared · 3 sensitive

Signaturepresent

Anti-featuresNonFreeNet

Sensitive accessREAD_EXTERNAL_STORAGESYSTEM_ALERT_WINDOWWRITE_EXTERNAL_STORAGE

Declared permissions

android.permission.ACCESS_NETWORK_STATE android.permission.FOREGROUND_SERVICE android.permission.INTERNET android.permission.POST_NOTIFICATIONS android.permission.READ_EXTERNAL_STORAGE android.permission.RECEIVE_BOOT_COMPLETED android.permission.SYSTEM_ALERT_WINDOW android.permission.WAKE_LOCK android.permission.WRITE_EXTERNAL_STORAGE uk.org.retallack.slimbook.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Tracker status: Not assessed by WIKI for Android.

07 / Sources

Evidence ledger

Each entry is a captured public reference backing this record.

RepositorySource package page↗Source codeSource repository↗