Firefox Nightly for Developers APK

Version 122.0a1 - org.mozilla.fenix

Nightly is built for testers. Help us make Firefox the best browser it can be.

Firefox Nightly for Developers apk

APP Information

Download Version 122.0a1 (2015987111)
Apk Size284.83 MB
App DeveloperMozilla
Malware CheckTRUSTED
Install on Android5.0 and up
App Packageorg.mozilla.fenix.apk

Download Firefox Nightly for Developers 122.0a1 APK

App Description

Firefox Nightly for Developers is mozilla,fenix,productivity,firefox,nightly, content rating is Everyone (PEGI-3). This app is rated 4.48 by 23 users who are using this app. To know more about the company/developer, visit Mozilla website who developed it. org.mozilla.fenix.apk apps can be downloaded and installed on Android 5.0 and higher Android devices. The Latest Version of 122.0a1 Available for download. Download the app using your favorite browser and click Install to install the application. Please note that we provide both basic and pure APK files and faster download speeds than APK Mirror. This app APK has been downloaded 60598+ times on store. You can also download org.mozilla.fenix APK and run it with the popular Android Emulators.

Warning: Nightly is an unstable testing and development platform. By default, Firefox Nightly automatically sends data to Mozilla — and sometimes our partners — to help us handle problems and try ideas. Learn what is shared:

Firefox Nightly gets updated every day and is designed to showcase the more experimental builds of Firefox. The Nightly channel allows users to experience the newest Firefox innovations in an unstable environment and provide feedback on features and performance to help determine what makes the final release.

Found a bug? Report it at:

Want to know more about the permissions Firefox requests?:

See our list of supported devices and latest minimum system requirements at:

Mozilla marketing: In order to understand the performance of certain Mozilla marketing campaigns, Firefox sends data, including a Google advertising ID, IP address, timestamp, country, language/locale, operating system, app version, to our third party vendor. Learn more by reading our Privacy Notice here:

Take a browse on the wild side. Be among the first to explore future releases. 

App ChangeLog

  • * Sort Logins
  • * Streamline Bookmarks/History access
  • *
  • * Stability and bugfixes

App Screens

Firefox Nightly for Developers App Screen 1Firefox Nightly for Developers App Screen 2Firefox Nightly for Developers App Screen 3Firefox Nightly for Developers App Screen 4


Apk scan results

Apk Scaned By TotalVirus Antivirus,org.mozilla.fenix.apk Was Risky.Detected 2 From 55 Scan.
Scan Stats:harmless:0|type-unsupported:9|suspicious:0|confirmed-timeout:0|timeout:2|failure:2|malicious:0|undetected:63|
File type:Android
Magic:Zip archive data, at least v0.0 to extract, compression method=deflate
File size:298669434
Uncompressed Size:659530098
Contained Files	:2540
Contained Files By Type:xml:566,bin:1,svg:14,gz:1,js:120,dex:2,jsm:1,so:67,png:1,mjs:1,txt:1,ja:1,css:41,

Older Versions

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Google Play Reviews

  1. Naman Kapoor-avatar

    Naman Kapoor

    The functionality on the browser is superb. Add-ons make it better than other browsers. Have a major problem with it though, I use a OnePlus phone and have my default font set as OnePlus Sans which I can't see on the webpages I load on this browser. Chrome transfers my phone's font to websites as well, and being so used to this font, I'm unable to switch to Firefox despite liking its functionality more. Would appreciate help on the issue.

  2. Kyle Maziuk-avatar

    Kyle Maziuk

    Good browser, but would really like to see a more tablet-optimized UI, as well as optimization for mouse usage. The mouse will work okay at first, but eventually the UI becomes unresponsive to clicks until the app is restarted.

  3. Dennis Maksymov-avatar

    Dennis Maksymov

    UPD: thankfully, developers added an option to disable tab grouping. Firefox is usable again, thank you! __ It was my favorite browser for more than a year, but after recent update which introduced that "smart" grouping of tabs it became unusable for me. As a person who have more than 50 tabs open I find it unbelievably annoying to switch between tabs in the new layout. Just downloaded Firefox Beta and was happy to see that this nasty update isn't there yet. Hopefully you can keep it that way.

  4. Michael Beld-avatar

    Michael Beld

    It's a good time to use this browser since so much is happening development wise. That being said, I'm not a fan of the newer additions to the Home Page. Jump Back In is too big, and I always disable Pocket. Tab Grouping I hear people complain about, but so far it's nonexistent for me. Users are smart enough to make their own groups when they need to, no need to have the browser try and automate the process. Just allow us to actually move tabs, let alone group them, and all will be well.

  5. Randy Bell-avatar

    Randy Bell

    This is just for the latest update. This update broke Firefox on my Pixel. After clearing cache/data was able to restart, but also lost all my settings, bookmarks, config:about custom setting, etc. All previous releases were fine.

  6. xpmon-avatar


    Thanks for removing the new inactive tabs feature, it was completely unworkable, increased my stars because the new version got a lot of stuff right, I love the home screen, pinned tabs, jump back in, collections they all work great Still the same extension list, really need to get back access to the whole extension marketplace again, at least to the ones that worked before

  7. Leo Pham-avatar

    Leo Pham

    I love that it maintains a list of closed tabs so that you can always restore them. add-on support is great too, as well as the collections and inactive tabs feature. one minor gripe: the new tab button focuses the url bar and launches the keyboard automatically, which I then need to dismiss. another criticism: I can swipe away "other" tabs, but not search tabs. this inconsistency confuses me. I would like to be able to swipe those away too.

  8. Sam Vich-avatar

    Sam Vich

    I really want to keep using this browser because of the addon support, but the devs keep introducing new tab features that can't be disabled. E.g. I don't want my old tabs to be grouped under "inactive tabs". Recent feature also shifts search engine pages to the top of open tab list. Also, still can't rearrange tabs. Meanwhile, chrome has had this feature for years. Please let your users choose how they best want to use your browser. You can't expect everyone to enjoy the same experience.

  9. Braham Snyder-avatar

    Braham Snyder

    Unlike normal Firefox (as of a couple months ago at least), addons work (admittedly with way too much effort..). Also, unlike normal Firefox (as of today), the "undo" button that pops up when you close a tab actualy puts the tab back in the right spot. Major problems, please let me turn these things off seriously these are so frustrating: new auto tab grouping thing (spoiler: it's impossible for anyone to correctly guess these groups, just stop); inactive tabs (gah)

  10. Satria Nugraha-avatar

    Satria Nugraha

    There are a few improvement FF dev can made. First, fix the "autofill on other apps", it doesn't work at all. Second, I hate how FF refreshing background tabs, it is so annoying when you only want to copy authenticator code/password, then the page get refreshed and lost its states. Third, please allow us to re-arrange top list sites, and abilities to sync top sites & collections with PC. Still, great job devs!