Free software that warms up your computer display at night

f.lux for Mac

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Download f.lux 39.9873

f.lux 39.9873

  -  2.25 MB  -  Freeware
  • Latest Version

    f.lux 42.1

  • Operating System

    Mac OS X 10.10 or later

  • User Rating

    Click to vote
  • Author / Product

    Michael Herf / External Link

  • Filename

    Flux.zip

  • MD5 Checksum

    c32a0bdb58525d43b60d42ded04fa495

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system. Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of f.lux 39.9873.


For those interested in downloading the most recent release of f.lux for Mac or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


We would love to hear from you

If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

  • f.lux 39.9873 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

What's new in this version:

- This tries even more to fix the "white cursor" bug in 10.15.1, but we are not sure yet if we've got it
- It tries to fix brightness changes that broke in 10.14
- It is doing a few of the new Catalina security things (hardened runtime and notarization), adds permissions to change dark mode and access location, so please test location finding and "dark theme at sunset"
- Updates the Sparkle updater to a new version that should work better on Catalina, let's hope that works too

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