Firefox Nightly for Developers

Name: Firefox Nightly for Developers
Rating: 4.319878 (66406 reviews)
Author: Mozilla

Mozilla

★ 4.3 (66,406 ratings)

⬇ 1,000,000+ downloads

Est. actual: 3,386,203

Free

Released: Jun 27, 2019

No in-app purchases

No ads

Rated: Everyone

Signals

4 this week · 2 positive · 1 warning All of this week's signals →

📈Last 7 days +9.8K installs — 43% slower than the week before (+17K) · 1.2K/day since Sep 26
🏆Among Productivity apps top 1% by installs gained this week (487 peers growing)
⭐Rating steady at ★ 4.32 since Sep 26
🛠Updates actively updated · updated 8 days ago · every ~14 days (3 updates tracked)

Installs since launch

+42,916 installs · +499 ratings since Sep 26

Update history

161.0a1 Nov 2, 2026

160.0a1 Oct 22, 2026

159.0a1 Oct 5, 2026 · seen Sep 26, 2026

Firefox Nightly for Developers screenshot

Firefox Nightly for Developers is a productivity app by Mozilla with 1,000,000+ downloads (about 3.4M estimated). +9.8K installs in the last 7 days. Rated 4.3 from 66K ratings. Released Jun 27, 2019. Install growth, rank history, SDKs and ad networks.

From the store listing: “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…”