Firefox Klar: No Fuss Browser Icon

Download Firefox Klar: No Fuss Browser APK 143.0 Universal · Android 21+

By Mozilla • Updated May 03, 2026
Communication Universal Native (Java/Kotlin) 323.84 MB
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This is the universal build of Firefox Klar: No Fuss Browser 143.0. It contains native libraries for every CPU architecture (arm64-v8a, armeabi-v7a, x86, x86_64), so it installs on any Android device. The trade-off is size — it's larger than per-architecture variants. Pick this one if you're unsure which CPU your phone has, or if you plan to share the APK with multiple devices.

File size: 323.8 MB   •   Min Android: 21   •   Target Android: 36   •   Version code: 392512023   •   Framework: Native (Java/Kotlin)   •   Permissions: 29

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File Information

Package Nameorg.mozilla.klar
Version Name143.0
Version Code392512023
ArchitectureUniversal
Min Android VersionAndroid 21 (API 36)
Main Activityorg.mozilla.focus.activity.MainActivity
FrameworkNative (Java/Kotlin)
File Size323.84 MB
Signature (SHA1)5EF5AE4028C98492E2B2ADE34FFF286605D5068F
File Hash (SHA256)25fdc77545f27a7e1a72707c06f59c3a40ac7ac8f53f0b7f4a343fdbb1dd1623

What's New

Fehlerbehebungen und technische Verbesserungen.

App Description

Browse like no one’s watching. The new Firefox Klar automatically blocks a wide range of online trackers — from the moment you launch it to the second you leave it. Easily erase your history, passwords and cookies, so you won’t get followed by things like unwanted ads.

“Private browsing” on most browsers isn’t comprehensive or easy to use. Klar is next-level privacy that’s free, always on and always on your side — because it’s backed by Mozilla, the non-profit that fights for your rights on the Web.

AUTOMATIC PRIVACY

• Blocks a wide range of common Web trackers without any settings to set

• Easily erases your history — no passwords, no cookies, no trackers

BROWSE FASTER

• By removing trackers and ads, Web pages may require less data and load faster

MADE BY MOZILLA

• We believe everyone should have control over their lives online. That’s what we’ve been fighting for since 1998.
Download Firefox Klar: No Fuss Browser APK

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APK Permissions 29

  • android.permission.ACCESS_COARSE_LOCATION
  • android.permission.ACCESS_FINE_LOCATION
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.CAMERA
  • android.permission.CREDENTIAL_MANAGER_QUERY_CANDIDATE_CREDENTIALS
  • android.permission.CREDENTIAL_MANAGER_SET_ORIGIN
  • android.permission.DOWNLOAD_WITHOUT_NOTIFICATION
  • android.permission.FOREGROUND_SERVICE
  • android.permission.FOREGROUND_SERVICE_DATA_SYNC
  • android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK
  • android.permission.FOREGROUND_SERVICE_SPECIAL_USE
  • android.permission.HIGH_SAMPLING_RATE_SENSORS
  • android.permission.INTERNET
  • android.permission.MODIFY_AUDIO_SETTINGS
  • android.permission.POST_NOTIFICATIONS
  • android.permission.QUERY_ALL_PACKAGES
  • android.permission.READ_EXTERNAL_STORAGE
  • android.permission.READ_MEDIA_AUDIO
  • android.permission.READ_MEDIA_VISUAL_USER_SELECTED
  • android.permission.RECEIVE_BOOT_COMPLETED
  • android.permission.RECORD_AUDIO
  • android.permission.USE_BIOMETRIC
  • android.permission.USE_FINGERPRINT
  • android.permission.WAKE_LOCK
  • android.permission.WRITE_EXTERNAL_STORAGE
  • com.android.launcher.permission.INSTALL_SHORTCUT
  • com.samsung.android.providers.context.permission.WRITE_USE_APP_FEATURE_SURVEY
  • org.mozilla.klar.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
  • org.mozilla.klar.permission.RECEIVE_DOWNLOAD_BROADCAST

Frequently Asked Questions about Firefox Klar: No Fuss Browser APK

This is the universal variant — a single APK that contains native libraries for every CPU architecture. It installs on any Android device but is larger than per-architecture variants.

Yes — the APK's signature has been cryptographically verified against the publisher's signing key. The SHA-256 hash is shown in the File Information panel so you can independently confirm the file matches the original release.

Android 21 (API level 36) or newer. Older devices will refuse the install.

Install a free app like 'CPU-Z' or 'Droid Hardware Info' from the Play Store and look at the ABI / Instruction Set row. Most phones made after 2017 are arm64-v8a; if in doubt, download the universal variant.

All variants are functionally identical — same features, same version. They differ only in which CPU architectures the native code is compiled for, and (sometimes) which screen densities the included graphics target. Pick the one that matches your device for the smallest install size, or pick 'Universal' if you're unsure.