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Download Firefox Nightly for Developers Nightly 210401 17:01 APK
Version: Nightly 210401 17:01 (2015802121)
Languages: 103
Package: org.mozilla.fenix
Downloads: 40
Target: Android 11 (API 30)
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What's new in Firefox Nightly for Developers Nightly 210401 17:01
From version 5.2.0:
* Sort Logins
* Streamline Bookmarks/History access
* Improved QR code scanning
* Stability and bugfixes
About Firefox Nightly for Developers Nightly 210401 17:01
Please note that this app used to be titled Firefox Preview. It has now been transitioned to Firefox Nightly.
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Firefox Nightly is a developmental channel for new Mozilla Firefox releases.
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: github.com/mozilla-mobile/fenix/issues
Firefox Nightly automatically sends feedback to Mozilla: www.mozilla.org/privacy/firefox/#telemetry
Want to know more about the permissions Firefox requests?: mzl.la/Permissions
See our list of supported devices and latest minimum system requirements at: 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: www.mozilla.org/privacy/firefox/
Firefox Nightly for Developers Nightly 210401 17:01 screenshots (4)
Screenshots from version 146.0a1
Firefox Nightly for Developers Nightly 210401 17:01 variants
This release comes in several variants (we currently have 3). Consult our handy FAQ to see which download is right for you.
Version:121.0a1(2015982688) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 29, 2023 at 6:44AM UTC
File size:89.26 MB
Downloads:825
Version:121.0a1(2015982592) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 28, 2023 at 6:22PM UTC
File size:89.25 MB
Downloads:26
Version:121.0a1(2015982400) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 27, 2023 at 11:53PM UTC
File size:89.1 MB
Downloads:15
Version:121.0a1(2015982304) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 27, 2023 at 6:33AM UTC
File size:89.13 MB
Downloads:12
Version:121.0a1(2015982208) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 27, 2023 at 2:24AM UTC
File size:89.08 MB
Downloads:11
Version:121.0a1(2015981920) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 25, 2023 at 7:07AM UTC
File size:89.15 MB
Downloads:21
Version:121.0a1(2015981824) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 24, 2023 at 7:50PM UTC
File size:89.24 MB
Downloads:17
Version:121.0a1(2015981728) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 24, 2023 at 6:22AM UTC
File size:89.12 MB
Downloads:18
Version:121.0a1(2015981680) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 24, 2023 at 12:07AM UTC
File size:89.22 MB
Downloads:650
Version:120.0a1(2015981536) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 23, 2023 at 5:37AM UTC
File size:89.37 MB
Downloads:22
Version:146.0a1
Uploaded:November 5, 2025 at 2:18AM UTC
File size:58.28 MB
Downloads:1,689
Version:145.0a1
Uploaded:October 13, 2025 at 8:09AM UTC
File size:58.17 MB
Downloads:1,202
Version:144.0a1
Uploaded:September 14, 2025 at 5:33PM UTC
File size:56.07 MB
Downloads:1,024
Version:143.0a1
Uploaded:August 18, 2025 at 9:16PM UTC
File size:55.76 MB
Downloads:1,048
Version:142.0a1
Uploaded:July 22, 2025 at 3:31AM UTC
File size:54.73 MB
Downloads:1,067
Version:141.0a1
Uploaded:June 23, 2025 at 5:45PM UTC
File size:54.02 MB
Downloads:899
Version:140.0a1
Uploaded:May 27, 2025 at 10:48PM UTC
File size:53.5 MB
Downloads:1,092
Version:139.0a1
Uploaded:April 28, 2025 at 5:45PM UTC
File size:52.36 MB
Downloads:1,534
Version:138.0a1
Uploaded:April 1, 2025 at 4:08PM UTC
File size:51.65 MB
Downloads:1,259
Version:137.0a1
Uploaded:March 3, 2025 at 3:19PM UTC
File size:51.04 MB
Downloads:997
