Thank you for testing Firefox Nightly! We are excited to introduce a major upgrade and a brand new design, and as always we count on your feedback.

Key highlights:

-Bottom nav bar for easier access with option to customize
-Dark & light themes
-Collections to organize your tabs
-Improved support for Progressive Web Apps
-Coming soon: New and secure add-ons interface. WebExtensions will be disabled for now.

More details at
Firefox Nightly is a developmental channel for new Mozilla Firefox releases.

Please note that Firefox Aurora is no longer available and has transitioned to Firefox Nightly. More details here:

Download the release version of Firefox here:

Firefox Nightly 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

Firefox Nightly automatically sends feedback to Mozilla:

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:
See available APKs
There's a more recent version available below!

This release comes in several variants (we currently have 4). Consult our handy FAQ to see which download is right for you.

2015722945 APK
February 19, 2020
Android 5.0+
2015722947 APK
February 19, 2020
Android 5.0+
2015722949 APK
February 19, 2020
Android 5.0+
2015722951 APK
February 19, 2020
Android 5.0+
All Releases