About f.lux
Warms your screen at night to help you sleep better.
f.lux is a popular pick in the utilities space, trusted by people who want results without the clutter. You get automatic color temperature and location-based schedule out of the box, with no bloat and no sign-up.
Get f.lux for Windows now: the current version, a clean installer and a fast, direct download.
Key features
- ✓Automatic color temperature
- ✓Location-based schedule
- ✓Custom presets
- ✓Tiny and free
Requirements
Windows 10 / 11, 64-bit
f.lux — frequently asked questions
Is f.lux free to download?+
f.lux is free to download from HivApps.
Is f.lux safe to download?+
Yes. HivApps links to the latest f.lux build and keeps listings clean, with no bundled extras. As always, keep your antivirus on and only install software you trust.
What is the latest version of f.lux?+
The latest version listed here is f.lux 4.1, updated Aug 23, 2026.
What do I need to run f.lux?+
Windows 10 / 11, 64-bit
How do I install f.lux on Windows?+
Click the Download button on this page, run the installer once it finishes downloading, and follow the on-screen setup steps.
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Latest version (4.1) · Safe & clean