Firefox Nightly for Developers

4.5
53.8K reviews
1M+
Downloads
Content rating
Everyone
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About this app

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: https://www.mozilla.org/en-US/privacy/firefox/#pre-release

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: https://github.com/mozilla-mobile/fenix/issues

Want to know more about the permissions Firefox requests?: https://mzl.la/Permissions

See our list of supported devices and latest minimum system requirements at: https://www.mozilla.org/firefox/mobile/platforms/

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: https://www.mozilla.org/privacy/firefox/

Take a browse on the wild side. Be among the first to explore future releases.
Updated on
Mar 27, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.5
50.4K reviews
A Google user
June 29, 2019
Looks good, works well. However, it doesn't work with Firefox Focus' "Open with" feature (it asks me to install Firefox), and the tab list view can get disconcerting while trying to switch tabs. Probably because while the tab bar is at the bottom, the actual tabs are not. The fact that collections take up the same prominence as tabs also adds to the nonintuitiveness of that view
18 people found this review helpful
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A Google user
August 13, 2019
it works pretty well. the added security/less tracking than other browsers is a huge plus. the only problem with the browser is how swiping up from the bottom of the screen is how you set bookmarks, share pages, access settings/report site issues etc. galaxy phones have their home button/back button swipe up from the bottom of the screen the same way. because of this, the bookmarks button and the "report site issue" button get hit accidentally countless times. it's super frustrating.
4 people found this review helpful
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Andy M
December 11, 2021
My preferred browser because of Add-On support, even though a workaround with "Collections" is needed to install most of them. I've got uBlock Origin, ViolentMonkey for userscripts, Privacy Badger, and more, and I can finally browse the web on my phone with most of the same power & flexibility I have on my desktop. It is a bit 'rough around the edges' compared to Chrome. Some sites behave differently, and I've run into a few that are just broken in FF. Overall, though, I'm happy.
10 people found this review helpful
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