f.lux (preview, root-only)

- March 15, 2016

Everyone

( 4,788)

f.lux (preview, root-only)- screenshot thumbnail

Description

f.lux removes the bright blue colors from your phone to help you wind down at night and returns your screen to normal the next day. This preview version is not a final release. It requires a rooted phone, and otherwise it will not do much. We appreciate your help with bug reports and feature questions.

Most rooted Lollipop and Marshmallow devices (5.x and 6.x) will work.
Some rooted Kitkat (4.x) devices will work, but many do not.

Known issues:
- Many Samsung Galaxy devices do not work
- Your screen will flash anytime an app is updated through Google Play

Also, if you want to uninstall, do one of these things:
- Disable f.lux before uninstalling
- Reboot after uninstalling

Reviews

3.8

4,788 total

5 2,467

4 701

3 468

2 342

1 810

Craig Dalziel

Excellent (new rating) UPDATE: Now working perfectly on my custom ROM Note 7 port on my Note 4. I wish there were some extra controls, like, being able to temporarily pause the app from a notification etc but that in no way distracts from this app! (Still not working after update to v22.0) It's not working on my Note 4. Hopefully it will in time though. SuperSU granted root but nothing. I'll give it another update then I'll uninstall (down from 5 stars, for excellent intentions of the app, to 3 stars for it not being sorted yet)

René Marves Gómez

Almost perfect I'm a long time user of f.lux on my PC and just love it. I was missing it on my phone... Now I can have it here with the same easy to use settings as on the PC. The only thing missing to be perfect is the ability to dim the screen more than factory settings. Phones don't usually have real screen dimming capabilities and this could help to have a great time using the phone in the dark.

Lyndon Nicholas

It works, with caveats. I'm a giant fan of f.lux on desktop and the mobile version is no slouch, with the exception that it requires root at the moment and is still under work. It works exactly like the desktop app, but it's not perfect by any means. It IS indeed a battery drain right now, in fact I've noticed the same issue with Cyanogemod's implementation, and two, it will cause your device's UI to drop a considerable amount of frames when the screen isn't tinted. Otherwise it works.

Kevin Lowry

Galaxy s4, works flawlessly Installed on galaxy s4 on 4.2.2 and 5.1, works perfectly. Love f.lux on my pc, SOO glad I can get it on my phone too. No issues yet, sometimes the disable slider needs to be toggled twice to work.

Yohan De Silva

Need an option to adjust the time frames manually Say I don't want my screen to be dim in the evening, say I want it to be normal till 10pm, there is no option to make it happen. Hopefully 5 stars when you guys add this. Other than that works beautifully on n6p

MeLRoY MaSCaReNHaS

Review For one I am a flux user on PC and was waiting for an android version since I don't really like the reddish tinge on othe4lr apps however there are some issues. Flux gets the colour right but timings of the day wrong. Second my phone lags while it is running. Needs improvement definitely till it can be adopted by many.

User reviews

Craig Dalziel October 4, 2016

René Marves Gómez May 6, 2016

Lyndon Nicholas August 16, 2016

Kevin Lowry August 16, 2016

Yohan De Silva April 10, 2016

MeLRoY MaSCaReNHaS May 31, 2016

Seemab Haider June 13, 2016

Love the way I am user of flux for windows and linux. The way it help me none other app does i am 200% sure soon this app for android will be bug free and also for non rooted phones. Best of luck devs much appreciated ur work. SH

Dave Garcia March 19, 2017

There's not doubt that flux is the superior product in functionality, what holds it back is the fact it works inconsistently. The night reading mode works are about 10 seconds before reverting. Choosing ember doesn't work, it just returns to a lesser level. I've given up and switched to twilight. Sorry :(

Ben Izadi June 22, 2016

I rooted my phone for this And it's totally worth it. This application on Mac and PC really got rid of my eye strain that i was suffering from for over a year. This app really removes the blue light and doesn't work like all other apps by adding a shade as overlay. They modify colors by root access. That's the right thing.

Kautilya Save December 6, 2016

Add widget & Tasker support Android best app award. :) That's my wish list or even flux for Mac has option to disable for certain apps like safari. I would use it to disable while playing videos on YouTube or MX Player.

Supreeth Sharaschandra October 10, 2016

Just One Thing Missing I love this app, and have it enabled both on my laptop and on my phone. I love how easy to manage it is, and how well it adjusts the brightness settings without much input from me. However, I do feel there is one thing missing that would make it amazing. I wish there was a widget, or a persistent notification that would allow me to temporarily turn off the filter and turn it back on. I would give this app five stars if that were to be implemented in some way.

Brett Dolinski September 13, 2016

I really like this app. I was using it on my PC until I got some computer glasses but still want it on my phone so that when I turn it on in the middle of sleeping my face isn't blasted with light. My only issue that I work the night shift and I can't seem to change the location even though it is clickable. I have changed my "Wake Up" time, but it's the same time it changes to the red hue. Because of this my screen is always in a state of F.Lux being active. Once I can do that this app will be perfect!

Domenic Giovanni Mercuri March 25, 2017

PERFECT PC to ANDROID 4.1.2 IMPORT!!! I have a rooted Samsung Rugby Pro, Android 4.1.2, and this app works beautifully. I was using Twilight, which places a translucent filter over the screen, lessening visibility. However, Twilight does not filter system toasts, which kills my eyes!!! f.lux filters everything, including system toasts, while remaining readable. The only problem I found, was that f.lux entered a never-ending loop after I selected my location. I turned off/on phone, and everything worked like peas and carrots. 25 Stars!

Alan Ponsford October 23, 2016

Great app,but needs customisation! This is a great little app that makes using your phone in the evenings or night much nicer and easier on the eyes. However I work split shifts, and find myself having to turn it on or off accordingly. What's needed is an option to set on/off times ourselves, this would be a five star no problem!

Gustavo Santos April 17, 2016

Finally is here! I've been waiting for this for so long! I used Twilight for a couple of months but it's just a red colour layer over the screen, doesn't really make it as comfortable as f.lux. The darkroom mode is amazing! Loving this! For Nexus 4 users: ser the display driver from compositor to Qualcomm. I noticed speed and stability improvements after this change.

Christopher Brackett May 29, 2016

Needs work. Full confidence in devs. I've used flux on literally every platform it was built for, and I've never been more pleased with a piece of software. I've never, ever, had a single problem with flux, on anything. This Android version was long overdue, and I understand the challenges of achieving what it does on a platform like Android, but these guys have impressed me. It's still beta-ish, software, but it works very well for me. I have full confidence that the devs will improve hardware support, which should improve performance. Kudos!

Richard Rosner May 10, 2016

Looks great It seems to be working really great. It looks way better than any other app I tried. In a feature release a whitelist for apps would be great. And it sadly doesn't always start on bootup. It says that it starts but it only really works when I open the app manually. Sadly only worked with SELinux Permissive Kernel. After returning to stock, stopped working. But I hope there is a fix possible in the future.

umesh farrow April 24, 2016

Make it Better. At the first time it was working good, okay. Great, but all of a sudden it's been stopped. I have give full root permission too. :( unhappy with this one.

John Roesel April 10, 2016

Great work thus far! For a preview it has been working very well on my Nexus 5X! I've been waiting for f.lux to make its way over to Android since jailbreaking early iPhone models and enjoying on it those mobile platforms. No other app does it as well, can't wait for an official release.

Jacob Chase September 14, 2016

Yay f.lux is here! This is such an amazing program. I am so glad to have this on my phone now. There is a slight bug when installing apps the disables f.lux for a second or two before returning to your preset. Other than that, this app is perfect for anyone who likes to use their phone late at night in bed, or in any dark area.

Rémi Chauchadis October 29, 2016

Awesome but... The color is just... Woaw. So much better than Twilight and his red filter. However, some things must be improved. First, sometimes the filter turn off by itself and I have to relaunch it by hand, or not it depends. A few other stability problems must be corrected. Once this will be done, that would be awesome. Keep it up guys, good job! 😄

Brandon Evans June 26, 2016

Great preview - feature suggestion Works amazingly well -- it has become my favorite app that does this, above cf.lumen and twilight! I would love to see a setting in the future to change the duration of the transition, like on the desktop application.

Omar Morales Luna January 3, 2017

Battery Hog. Works great on Nexus 6P. Actually filters blue light allowing a smooth red spectrum to flow through. Does not place a fake red shade on your phone like Twilight. Also has 3 different times of days preset for 3 different levels of light filtering....... Unfortunately the Con is I noticed it drains my battery very quick. Using Chrome for 45 min straight non stop on the train to work used to only take up 8-9% of battery. When the light filter is on and doing the same activity it drains 14%. Doesn't happen when Flux is disabled.

March 18, 2017

Very stable with S4, but needs its own brightness control seprate from sys. No unusual battery drain. The best part is this isnt an overlay overlay filter! A very nice piece of kit. - S4 KK444 Root AT&T ROM - Note II KK442 Root AT&T ROM Not working

Arvi Chan August 31, 2016

If it works for you, this is the best Unlike twilight, blue light filter and other apps that show an overlay this app seems to actually calibrate the screen colors working in root mode. So the dimming and blue light filter seem natural, the yellowish tinge of the screen really warm and relaxing. This is the best blue light eyes saver if it works for you. I have had some issues on different ROMs. Hope the devs fix it and I would be ready to pay $2.99 for this app.

Diana Kozakova December 4, 2016

Not working on Huawei P9 Lite! I was really looking forward on having this app on my mobile phone, too.. but unfortunately it's not working on my phone. First it says "starting f.lux" and in few seconds it says "f.lux was not able to get root access." Hopefully they'll fix it soon!! I would really appreciate it. Thank you.

Jay Shukla July 31, 2016

Didnt work Uninstalling... From my rooted Note 3 with Lollipop 5.0. Just did not made any change... Screen remained same throughout the day. I have been using F.Lux on my desktop for over an year and works like a charm. Will try once there is better support.

Salis Salman September 3, 2016

Long time iPhone user finds f.lux Wow, just wow. It works perfect. Even for a preview version. Still a few kinks here and there but I'm sure it'll be fixed. One request. Is there a way possible to implement dimming the screen brightness more further? That would be nice. Since my phone is still bright at lowest brightness. Its my phone's problem, so no stars deducted. Keep it up dev!

Daryl Chase April 26, 2016

Needs some work It is obviously a beta and will be improved. On my lg g3 it does not do the transitions so i have to manually turn it off and on. The screen also goes black and i have to press the power button to turn the screen off and on to make it reappear. So far i am happy with the quality it makes the screen look and am hopeful for its future.

Drew Gramlich August 15, 2016

Some bugs, Great for a preview & GREAT Dev. I love this program. I work odd hours and the pc version is absolutely amazing. This app has a few bugs that require fixing, but it's because displays vary wildly with phones vs pc setups on a tech level. Full faith in this developer. 5 stars because it's a preview. Would be 4 if this was a RC

DreamFragments1 April 2, 2016

Works semi-flawlessly on my device The transitions between preferences is fantastic. Although I'd like to customize the preferences a bit more, I'm content with all other aspects of the app. The biggest issue I've faced is the fact that installing and updating apps through the Play store freezes f.lux for a second, turning the tint off before reverting to it's working function. Not a bug that ruins the experience, but should be something you're aware of for some devices.

Brandon Scott March 20, 2016

Great on and a computer, now on a phone My device is running lolipop and rooted with KingRoot occasionally my screen will go black but as soon as I lock and turn the screen back on it goes back to the f.lux state. ****Dark room toggle works flawlessly and no more black after changing color driver.

Danny Markman August 12, 2016

Not Impressed I have to set my time that I want flux to turn off? This isn't the flux I'm used to on my PC. I expected it to activate and deactivate automatically with the rising and setting of the sun but it does not do that. Additionally, my screen will flicker from the color saturation of flux being on to the white glow of it not being activated quite frequently. Needs improvement and I will not be running it until these problems are fixed.

pTom pSharp November 2, 2016

They understand blue light Thankfully blue light it is being discussed a to lot more now that everyone has a screen in their hand! Several eye-safety App Devs don't quite seem to get it, I'm confident the original low-blue people can do it with f.lux!

Ryan Reese March 19, 2016

Nice, but... Dark room mode would be my fav feature if it worked right on my rooted 6P... It looks right (black BG, red text) for about 5 seconds after I enable it, but then it switches to red BG with black text. As others have mentioned, a widget to toggle this mode would be great too. Also, there is a setting to specify what time you wake up, but not one for when you go to bed? I would love to be able to specify when I want sunset, bedtime and wakeup time to be manually.

Luu Tran September 5, 2016

Great to see f.lux for Android! Alas, only composite mode works on Samsung Galaxy S tablet, and it is slow and causes pretty bad screen lag. I hope the dev will support Galaxy S. It has Exynos processor and Adreno GPU

Nasser Hashem June 20, 2017

Rooted my phone just for this app after quickly falling in love with the windows app. Really sad it does not work with Netflix though. I get a black screen no matter what setting, except off, it could be my device, Vivo 5r. Will test with my next device. Works fine with VLC, and YouTube. Also worth noting every time an app is installed it gets disabled for a very short time. Best course of action is to disable auto updates, and be ready if you do install an app.

Karol Przyczyna July 28, 2016

Terrible! After uninstalling the app and rebooting the phone, system UI crashes, there's no workaraund. I had to flash my ROM all over again. I love f.lux on desktop but this? I will never install this app on my phone ever again.

Steven Anon March 19, 2016

MASSIVE! BATTERY DRAIN I'm getting massive battery drain while this is running. I'm talking 100% to 60% in a time span of 25 - 30 minutes. I'm not 100% sure it's being caused by f.lux yet, but it began after installation and it's first night of taking over. I have installed better battery stats and will track it tonight. I'm not experiencing the battery drain during this morning, so it's leading me to believe it's this app. I will update tonight.

Thenmozhy Kaliyamurthy June 7, 2017

Its great to have a blue filter app which doesn't use screen overlay but compared to the PC/OSX version this is only acceptable because its still behind on many things apart from core functionality. Needs more work to get the automated dimming/brightening thing working according to time & on command.