GammaThingy

Gamma Thingy is a new app available on GitHub from developer Thomas Finch. It allows non-jailbroken iPhone owners running iOS 9 to change their screen gamma values for f.lux-like functionality. What’s remarkable about this little app is that you don’t need to be jailbroken to run it, and it works system wide.

Lots of users like f.lux, because it makes viewing a backlit screen in less than ideal lighting conditions easier on the eyes. I use f.lux on my Mac, and it makes working at night more tolerable. I also use f.lux on my jailbroken devices from time to time.

Gamma Thingy can be installed on your iPhone running iOS 9 today via a simple sideloading process. Check out this post to learn what’s required.

Gamma Thingy

To use Gamma Thingy, all you need to do is sideload the app via Xcode 7. Once Gamma Thingy is installed on your iPhone, you can launch it to adjust the gamma values via a simple slider, and enable automatic color changing based on a start and end times.

Gamma Thingy

To sideload Gamma Thingy, visit the app’s GitHub page and follow our sideloading tutorial for iOS 9.

Gamma Thingy is nowhere near as complex or robust as f.lux, but it’s a good stopgap until we have a jailbreak for iOS 9. Once a jailbreak is available, it’s just a matter of the guys at f.lux making their jailbroken version compatible with iOS 9.

Note, there’s also a 3D Touch gesture for the app icon that lets your quickly enable or disable the gamma changes. Thanks to Jake in the comments for pointing this out.

Gamma Thingy 3D Touch

Again, be sure to check out our side loading tutorial if you wish to give Gamma Thingy a try. Let me know what you think in the comment section down below.

  • Mike Chu

    This’ll be nice for my iOS 9 dev test device, but I’m still keeping my iPhone jailbroken

  • Rob

    Working on getting Mac OS X to run with virtualbox on my PC so I can try this out.

    • Xerae

      Same here!

      • Hi

        Look into hakintoshing Tonymacx86, is a good place.

      • John

        Same, but i soon gave up, the machine wouldn’t shutdown and then turn on again after ARGH

      • Rob

        iDeneb finally worked for me

      • Rob

        Proof

      • John

        what is iDeneb?

      • Rob

        Google. It is a modified version of OSX with drivers and boot loader for a lot of PCs.

      • John

        dont people use stuff like yosemite zone and stuff, or is it just a similar thing

      • Rob

        Depends what PC you have. Some are and aren’t compatible. But I’m gunna research Yosemite zone now thanks

      • John

        yeah, i used it but i did a virtual machine so maybe differnt

    • Hi

      Look into hakintoshing Tonymacx86, is a good place

    • Eun

      Don’t try it XCode 7.3.1 is checking the Serialnumber, and in Virtualbox it will always be 0 and invalid.

  • Jake Dai

    Met some issues while I was trying to load the application into my phone, but solved. One thing really worth to say is, this thing includes a 3D Touch function to let users quickly enable/disable the mode, which is so cool.

  • I’m hoping that side-loading can replace jailbreaking.

    • Maxim∑

      impossible

      • BlackNiggers

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      • Depends on what you jailbreak for I guess.
        My no1 reason for jailbreaking is to install retro gaming emulators. Side loading *should* be fine for that, but many great jb apps require root access to work properly.

  • socrates

    It does, but if you have the Hard Drive space, I’d recommend installing OS X with Clover. It’s the most native and pleasing option I’ve experienced.

  • Yunik

    how can this app run in background too. Most apps can’t do it, for example opera mini also has same kind of effect but it don’t works in other apps.
    can any one explain.
    And if there’s any developer out there, can you please may torrent client too. Thanks

    • They use a private API wich means in an App Store app you can’t use this kind of stuff. The app applies a filter to the display wich overrides the old one. This way the Gamma is changed and the app *DOES NOT* run in background. It does background task periodically though in order to check for your set time.

  • BlackNiggers

    ………………_„-,-~”~”’:::”:::’:::::”::::”…
    ………._,-”:::::::::::::::::::::::::::::…
    ………..,-‘::::::::::::::::::::::::::::::…
    ………,’::::::::::::„:„„-~-~-‘~-‘~–~-~…
    ……..,’::::::::::,~”: : : : : : : : : : : : : : : : : : ‘-|
    ……..|::::::::,-‘: : : : : : : : – -~””¯¯”-„: : : :
    ……..|::::::::|: : : : : : : : : _„„–~””’~-„: : : : ‘|
    ……..’|:::::::,’: : : : : : :_„„-: : : : : : : : ~–„_: |’
    ………|::::::|: : : „–~~”’~~””””-„…_..„~””””””¯| PROPANE NIGGA.
    ………|:::::,’:_„„-|: : :_„—~: : :|”¯¯””|: ~—„_: ||
    ……..,~-,/”: : : |: 🙁 o__): : |: : : :|:(o_): ..|
    ……../,’-,: : : : : ”-,_______,-”: : : : ”-„_____|
    ……..: :|: : : : : : : : : : : : : :„: : : : :-,: : : : : : :
    ………’,:’: : : : : : : : : : : : :,-‘__: : : :_’,: : : : ;: ,’
    ……….’-,’: : : : : :___„: : :”: : ¯”~~”: ‘: : ~–|’
    ………….|: ,: : : : : : : : : : : : : : : : : : : : : :: : 😐
    ………….’|: : : : : : : : : -,„_„„-~~–~–„_: :: |
    …………..|: : : : : : : : : : : : :——-~: : : : : |
    …………..|: :”-,: : : : : : : : : : : : : : : : : : : : 😐
    …………..’,: : :”-, : : : : : : : : : : : : : : : : :: ,’
    ……………| : : : : : : : : :_ : : : : : : : : : : ,-‘
    ……………|: : : : : : : : : : ”’~———-~”
    …………._|: : : : : : : : : : : : : : : : : : : 😐
    ……….„-”. ‘-,_: : : : : : : : : : : : : : : : : ,’
    ……,”. . . . . ”’~-„_: : : : : : : : : : : : :,”’-„

  • Yunik

    why doesn’t apple allows this app in app-store. I though the such apps will not work on iOS because it does not allows apps to do any thing outside there sandbox, but this gammathingy app made me doubt it.(i’m not a developer or anything so ignore me if there’s something stupid thing in above lines)

    • It seems apple is opening up the iOS system for all kinds of extensions. It is possible that apps like this will be allowed in the future, as apple shows that it continues to allow new kinds of extensions. Ad blockers are a new kind of extension for example.

  • jeffsters

    Nice app but why not a single mention of the potential security issues with sideloading or did I miss it?

    • There aren’t any, the code is publicly available so if something’s wrong it would have been picked up by somebody. The only potential security issue is if you were to compile the app with a compromised version of Xcode that includes malware such as Xcode Ghost.

      • pzp1997

        If everyone had that mentality we would all be hacked. Don’t sideload apps unless you’ve examined the source code yourself. Additionally, even if a reputable person vouches for the safety of an app, the source code can be changed between the time that they checked it and when you downloaded it to install it.

      • I take it you’ve viewed the source code of OpenSSL? No? Then why are you using it on your OS? It’s okay to trust the judgement of others as long as you’re aware there’s a minute possibility that they may have missed something or as your rightfully said that something may have changed.

  • Michael

    I keep getting “An App ID with Identifier ‘de.nautigg.me.thomasfinch.GammaTest’ is not available. Please enter a different string.” any help?

    • jhadi

      change it to yourname.GammaTest

      • Universal Logic

        “No Devices Registered Error. Creating a provisioning profile requires one or more devices to be registered with your team. Connect a device to your Mac to add it to your team.” How do I add a device to “my team”?

      • A. Tasso

        that worked! thank you

  • Shingo

    could anyone tell me whats so good having flux? screen seems uglier using this

    • Cameron Nelms

      I set mine so it’s on late at night. It helps me from blinding myself in the dark, though, mine isn’t as gamma-y as the one above. It really helps

      • Shingo

        do you use one from cydia or this one? if one from cydia mind tell me ur settings? for me yes flux make my eyes not so hurt but yellow ish make ma iphone like cheap phone…

      • pzp1997

        Who cares what other people think of your phone if it will save your eyes and help you to sleep better? And for the record, everyone that has seen me using it has told me how cool it looks and that they’re going to try it themselves.

    • QuarterSwede

      It’s basically anti-fatiguing. It’s best used at night when it also doesn’t stop your melatonin levels from rising like the white screen does. Melatonin makes us tired and want to sleep.

  • GeekCornerUK

    Does it expire after 90 days like most side loading?

  • WDETFitness

    There is also a variation of this app called GoodNight that is based off of this code. It is a little bit more polished and runs great on iOS9.1b5

  • Vasili Halai

    Has anyone succeeded? After I install it on my device it works very weirdly, showing various glitches on the screen. It’s definitely not what it should look like. What might be the problem?

    • Charles Maynard

      Was literally about to post this same comment, the discolored glitches are happening to me too.

    • Vasili Halai

      Found a solution – you need to disable “Reduce white point” setting if it’s enabled. Hope some of you find this helpful

      • Charles Maynard

        Awesome, it worked man, thanks!

  • Vasili Halai

    Really cool that it works even if you force quit the app.

  • Joonyaboy

    So pumped as I miss having f.lux.

    i can use my phone at night without messing up my melatonin

  • Michael Hulet

    FYI: The author of this code retained the copyright on it and did not provide a license, so to even download this code is copyright infringement (It’s ok to read it, though)

  • So Apple yells at the developer of f.lux to take their app down but not this?! Typical Apple.

  • Dam Spahn

    Steve Jobs must be rolling in his grave. iPhone’s display problems aren’t worthy of a cheap knock-off, much less the Apple line. Shameful.