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Redshift is a Linux application similar to Windows' F.lux, which gives the screen a red tinge automatically at night. Supposedly, it reduces eye strain and helps prevent sleep problems.

Is there any way I can adjust my screen's color temperature to create the same effect on Android?

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There are a fair few blue light filter apps on the Play Store that may suit your needs. The exact features will vary, but they all fit the general scheme of allowing you to adjust the color temperature of your screen.

Additionally, if your device is rooted, you can actually use f.lux nowadays.

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  • Your link is broken, and I am not able find another. Is there something similar? – MarianD Oct 3 '18 at 11:53
  • Looks like it was de-listed. I'm not aware of anywhere else that hosted a copy, so I re-wrote this to point to other apps on the Play Store. Sorry about that! – eldarerathis Oct 3 '18 at 16:12
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Well I know for a fact that there is Cyanogenmod ROM which has "filter options" one of them being only turn on red, I know its not automatic, but there is widgets for the home screen. I'm pretty sure there is a way to do it by app but it would require root access.

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    Tasker or Locale could probably turn it on, but I'm guessing a gradual change wouldn't be possible. – Matthew Read Feb 18 '11 at 17:56
  • unfotunatly when selected it completely turns off all other colors – Mehran Feb 18 '11 at 23:23
  • Sorry, but I could not find that setting (CYM11 here). Where's that? – Luis A. Florit Oct 2 '14 at 15:18
  • Settings-> Display & Lights-> (go to the bottom) Color calibration, at least that's what its like on my nexus 5 – Mehran Nov 5 '14 at 22:49
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NeyetLight looks like it would do the trick.

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  • Your link is broken. – MarianD Oct 3 '18 at 12:02
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Twilight works well, although it's just a screen filter, it's automated and very similar to f.lux if you move the color temp to the right more

I love it although it does look terrible, it's all we have, and I am not going to root my phone just to have a true color temp change that's insane, plus it voids my warranty which I need to have and rooting is insanely difficult, DO NOT tell me it's easy i've read the instructions for it -- it's NOT EASY

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You can try the Screen Filter app.

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    Gee whiz, man! Give us a link! – ale Feb 10 '11 at 4:01
  • unfortunately it's a no go but thanks for recommendation – david25 Feb 10 '11 at 4:06
  • Is it just the color? Maybe you could ask the dev to add color selection. – Matthew Read Feb 10 '11 at 4:28
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    yeah it's the color , regular LCD color makes your brain think its in sunlight and keeps you awake , more red color suppose to prevent that, i will try reaching the dev thx for the tip – david25 Feb 10 '11 at 4:48
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Current builds of CyanogenMod have a feature called LiveDisplay. It's very similar to f.lux, automatic changes in the evening and all. It actually changes the color temperature of the screen; it's not an overlay.

It can be turned on from Settings > Display & lights > LiveDisplay > Display mode > automatic.

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Screen Adjuster by Netman that allows you to control the red tint on the phone.

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  • Your link is now broken. – MarianD Oct 3 '18 at 12:32
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We have developed an app to adjust the screen temperature. It has no ads, over 200 good reviews, and small file size.

Bluelight Filter is a tiny utility (just 86kb!) to reduce the harmful effect of blue light emitted by smartphones & tablets. Blue light interferes with the sleep hormone production of our body and affects sleep.

Bluelight Filter

https://play.google.com/store/apps/details?id=com.panagola.app.bluef

Affiliation: Developer, Non-profit

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It doesn't provide red tint, but for late night, ultra-dim reading I use adjBrightness. It does require a rooted device.

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Twilight (free)

Twilight automatically makes the screen redder at night, with options for color temperature, intensity, and brightness. It has a nice Material design too.

Lux Lite (free) or Lux Auto Brightness ($3.80)

From Lux Dash > Triple star icon, you can enable/disable Night Mode and change Night Mode's color temperature. Automatic color temperature changing at sunset requires the paid version.

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Red Moon Lite (free) or Red Moon - Screen Filter (payed).

enter image description here

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