Flux is one of my favorite finds on Product Hunt so far. I love the moment my screen dims at ~5:30pm. So relaxing.

It helps to understand the science. Blue lights suppress melatonin, which keeps you from going to sleep when you want to. This is why staring at screens before bed = no good. F.lux works by filtering out blue light. You get a red hue to your screen which takes getting used to, but it seriously makes it easier to go to bed if you're using your computer late at night. There's a similar Android app as well, that I highly recommend. Game changer.

Honestly, if I was to buy a new computer, this is the first thing I would download.

Although Apple and Google have integrated blue light filters into their operating systems, they still haven't matched the capabilities that f.lux offers. f.lux gives you more control over the filter strength and once setup, you don't need to touch.

Pros:

I'm not wide awake before I go to sleep.

Cons:

It's not possible to do design work with a blue light filter

Just remember to disable it if you're doing design work with color. 😅

I have been using this since it first showed up on Product Hunt. It's probably my most used 'app' even though I barely ever interact with it. Once I found my optimal settings, I don't think I've opened the app itself more than a handful of times. It works as advertised most of the time. The only time I've had issues is when using it on external displays with Linux. Since it's my secondary device, it's not been much of a problem though.

Pros:

Easy to set up

Cons:

Works well with external displays on Macs, but not on Linux

I've been using f.lux for so long, it's hard for me to imagine life without it.

I love screen filters that reduce strain, This one's the best....

After using this for sometime, I can barely look at other screens now. Must-have for night-owls

I work on my computer for hours in the evenings, and this has been a life-changer in order to fall asleep at night. @herf, I feel like I owe you. This product ROCKS. 🙌

Thank you flux. I had sleeping disorder since years. Never knew the culprit was my laptop. Flux has returned my deep sleep (:

This is the best app I've installed on my mac to date. Highly recommended.

Long time user here & love the app & its soothing effect. Though I couldn't really find information on the wave length and frequency of the light emitting from the screens and the the difference created. ie, AFIK light of around 390 nm wave length seems to activate the serotonin switch (of the serotonin - melatonin pathway) & thus reduces prevents melatonin production (Eyes > Ganglion cells > optical nerves SCN > Pineal Gland). Do f.lux and similar products merely increase light in the high wave length parts (low frequency) so that for the visible eye its soothing ? Any pointers to analysis with say lightmeters/frequencies / comparison of frequencies etc ? Just curious.

A great tool. Really helps, and definitely recommend.

It may take some getting used to, but if you are working post 5pm, this is the only way to go.

@rrhoover no idea how it live without it.... @liveink me tooo but i figured there were some noobs here ;)

Used this and loved this for years. I've yet to use it on my phone, but certainly a must for all day at the monitor.

My eyes will thank f.lux forever. Last one year had been so strain-less for them. :)

One of the first apps I install on every new mac. Love the movie and darkroom effects as well!

How I love this app 😊

First started using it two or three years ago through an article in https://www.lifehack.bg/.

Pros:

It's so good that I forgot I was using it. I have never turned it off since. :) Try it!

Cons:

Maybe when doing design work, it could interfere with the perception of colour, but I have tried it while photoshoping, and it's no problem.