F.lux

F.lux

F.lux download for free to PC or mobile

F.lux is a lightweight app designed to adjust your screen's color based on the lighting in your environment. By considering both the type of light in your room—whether it's halogen, fluorescent, or natural—and the time of day, F.lux ensures optimal screen brightness and color. To customize settings, simply input your geographical coordinates using the Set Your Location function, which directs you to a webpage for confirmation. You can also choose the speed of the transition between color tones, opting for either a fast (20 seconds) or slow (60 seconds) change. Enhance your screen experience with F.lux for healthier eyes and better sleep.

29 May 2024
Title F.lux
Size 670.1 KB
Price free of charge
Category Applications
Developer N/A
System Windows
670.1 KB
3
1055 reviews
3117
downloads
The content of games with a PEGI 3 rating is considered suitable for all age groups. The game should not contain any sounds or pictures that are likely to frighten young children. A very mild form of violence (in a comical context or a childlike setting) is acceptable. No bad language should be heard. Equivalent to E (low end) and EC (which is no longer used). 435 titles were rated PEGI 3 in 2020.
PEGI Rating
F.lux

F.lux Features

F.lux is a revolutionary app that adjusts the color temperature of your screen according to the time of day, reducing eye strain and improving sleep quality. With customizable settings, you can create the perfect lighting for any environment. Say goodbye to harsh blue light and hello to a more comfortable viewing experience. Download F.lux now and see the world in a whole new light!

Night Shift

Adjusts the color temperature of your screen to reduce blue light and help you sleep better at night.

Sunset to Sunrise

Automatically adjusts the color temperature based on the time of day, transitioning from warm to cool tones.

Customizable Settings

Allows users to customize the color temperature, transition speed, and other display settings to suit their preferences.

Disable for an Hour

Provides the option to temporarily disable F.lux for an hour for tasks that require accurate color representation.

Movie Mode

Enhances the viewing experience by temporarily disabling F.lux while watching movies or videos.

Location-Based

Utilizes your location to adjust the color temperature based on the natural lighting conditions in your area.

F.lux overview

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    01

    The application helps regulate the color temperature of the screen depending on the time of day, providing comfort for the eyes. With the automatic adjustment feature, it takes into account your location (36.7°N, 4.4°W) and current time (sunrise was 4 hours ago) for optimal operation. Option to disable for one hour for color-sensitive tasks.

F.lux installation

download

Click on the Download button to start downloading F.lux for Windows

open

Open the .exe installation file in the Downloads folder and double click it

props

Follow the instructions in the pop-up window to install F.lux on Windows Desktop

run

Now you can open and run F.lux on Windows Desktop

F.lux reviews

Update: 17 Jul 2025

CharlotteMartin

It's been great to use F.lux, but I'm not fully convinced yet. While my eyes don't hurt like before, I think I have to tinker with the settings more to get the effect I want. Overall okay, just needs a bit of tweaking!

LucyTaylor

This app is pure magic! The warm tones at night make such a difference. I find myself finishing tasks much easier now. I just wish I’d found it years ago! Every night feels cozy, and my productivity's soared. F.lux, you rock!

AlexanderLewis

F.lux has some nice features, but I find them inconsistent at times. The color adjustments help a lot, yet I notice some lag when switching. Still, for the most part, it’s handy for night owls like me.

LiamRobinson

I've been using F.lux for a few weeks now, and wow! My productivity is up, and I can actually sleep better! Plus, the customization feature is super cool. Seriously, it’s a game changer for the late-night grind!

OliverLewis

Talk about a fantastic app! I was skeptical at first, but F.lux is everything people say it is! It's so easy to use, and my sleep schedule is thanking me. A total must-have for anyone who suffers from screen fatigue!

HannahNelson

I really like F.lux! It does what it promises, changing the color temperatures perfectly. My sleep has improved a lot. Just wish it had a few more customization options for personal preference!

OliviaWhite

I've been enjoying F.lux! It does help with my eyes. The transition is smooth, but I wish the interface was a bit more user-friendly. Still, it gets the job done and improves my sleep quality!

NoahHall

Totally stoked about F.lux! The night mode makes my late-night scrolls so much nicer. It’s been a huge help for my productivity and sleep. Can’t imagine my life without it now! Thank you, F.lux!

GraceWalker

Okay, F.lux is like a hug for my eyes! The adjustment is so smooth, and the warmth at night is so soothing. I love how it helps me wind down. What a gem! Need it on every device now!

JamesThompson

F.lux is good! I’ve noticed much less eye strain while using it. It’s easy to use and overall a nice tool for those who work late. My one complaint is it sometimes lags a bit when switching modes.

EllaKing

Loving F.lux! It’s easy to set up and makes such a difference at night. My eyes feel so much better after long coding sessions. I appreciate the warm light, but it could use a few more options for color temp!

EmilyJohnson

F.lux has completely transformed my nights! My sleep has improved so much since I started using it. The way it adjusts the screen colors is just amazing, and I can't believe I didn't find this sooner! A must-have for anyone who stares at a screen all day! Thanks, F.lux!

DanielLee

F.lux is okay, but I feel it doesn't always adjust well to my lighting. Sometimes my screen looks too orange when I don't want it to. I appreciate the effort though! Just some improvements needed, I guess.