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Twilight Pro $0.20 @ Google Play

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Twilight Pro $0.20 @ Google Play
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lyl on 02/02/2016 - 00:15 play.google.com (3163 clicks)
Last edited 02/02/2016 - 00:16

Can't fall asleep at 12am and I find this deal… oh the irony is real.

Anyways 2210 reviews at 4.6, another great app to add to your collection.

Are you having trouble falling asleep? Are your kids hyperactive when playing with the tablet before bed time?
Are you using your smart phone or tablet in the late evening? Twilight may be a solution for you!
Recent research suggests that exposure to blue light before sleep may distort your natural (circadian) rhythm and cause inability to fall asleep.

The cause is the photoreceptor in your eyes, called Melanopsin. This receptor is sensitive to a narrow band of blue light in the 460-480nm range which may suppress Melatonin production - a hormone responsible for your healthy sleep-wake cycles.

In experimental scientific studies it has been shown an average person reading on a tablet or smart phone for a couple of hours before bed time may find their sleep delayed by about an hour.

The Twilight app makes your device screen adapt to the time of the day. It filters the blue spectrum on your phone or tablet after sunset and protects your eyes with a soft and pleasant red filter. The filter intensity is smoothly adjusted to the sun cycle based on your local sunset and sunrise times.

PRO features
- more than 2 predefined profiles
- adjustable transition time
- option to turn off Twilight service altogether during inactive times
- new features will often first appear as PRO

Mobile Android App

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closed Comments

    • scrimshaw on 02/02/2016 - 00:38
      +29

      It's not. It makes your screen much more comfortable to look at night, no more switching on the screen in the middle of bedtime and burning your retinas.

      Not that anyone should be looking at a phone screen in bed anyway, but this is one of those apps that I'd recommend having in your app drawer in case you need to do some night reading.

      This is basically F.lux except for your phone / tablet

      • bonz on 02/02/2016 - 08:12
        +1

        Just bought this since it's recommended by scrimshaw, our own resident IT expert ;-)
        Edit: thanks to lyl as well

      • Namarrgon on 02/02/2016 - 15:54
        +4

        The idea is sound, this implementation isn't. From the screenshots, all it's doing is blending a red overlay on top. The idea (and what f.lux does) is to tone down blue frequencies, not just make things reddish. In particular, black areas should remain black, since there's no blue light to remove - but instead this app adds red light, which doesn't help at all, but just makes things harder to read by reducing contrast.

        • ESEMCE on 02/02/2016 - 16:07

          I've been using it for a while and I think you're right…

          I'm going to try out CF Lumen as suggested below to see if that's any better.

        • annarchon on 03/02/2016 - 07:42

          They probably need root for that, to fundamentally change how things are displayed rather than just an overlay.

          So if you are rooted

          https://play.google.com/store/apps/details?id=eu.chainfire.l…

          is probably the better choice.

          If not, then this will make do.

      • [Deactivated] on 09/02/2016 - 20:10

        Burning your retinas?? WTF?

        Tip: TUrn down the brightness.

    • hymio on 02/02/2016 - 01:47
      +2

      Also good for if you're gonna use your phone in cinemas because you can further dim the screen than the lowest default brightness. Dim feature also helps hide what's on your phone screen when on a packed train.

      • Pootie Tang on 02/02/2016 - 13:42
        +1

        What are you looking at on the train that needs to be hidden?

        • hymio on 02/02/2016 - 14:06

          Wouldn't you like to know ;)
          (Just the ozb site… Is it normal to be a bit embarrassed about being seen browsing ozbargain?)

    • Diji1 on 02/02/2016 - 08:44

      It is, the research is mixed and unconvincing.

      However it can play a role in reducing eyestrain if my anecdotal experience is anything to go by. (it is not, just like the people claiming sleep benefits based on their anecdotal experience: completely arbitary and unreliable)

  • spackbace on 02/02/2016 - 00:45
    +10

    Where's Bella?

    • wizzlesticks on 02/02/2016 - 01:49
      +2

      We're making Italiano for her.

  • Hiphopopotamus on 02/02/2016 - 00:52
    +3

    for 20c, why the hell not? :)

    • Diji1 on 02/02/2016 - 08:46
      +4

      Would you throw $0.20 on the ground if a sign said to?

      • Hiphopopotamus on 02/02/2016 - 09:27
        +3

        if i had it on me, i would consider it… maybe if it was a wishing fountain!

      • RocketSwitch on 02/02/2016 - 09:57
        +2

        What am I getting in return?

      • illumination on 02/02/2016 - 15:25
        +2

        How is this even relevant? Throwing it on the ground doesn't give me Twilight Pro…

        • King Steuart on 03/02/2016 - 10:53

          Unless it stops a piece of red cellophane from floating away

  • thereisriceandcurry on 02/02/2016 - 01:03
    +14

    I've been using the free version for the last 14 months and I cannot rate it high enough

    20c for the pro is probably the best investment for your sleep you will ever make

    I dont even know whats in Pro, but I love the free version so screw it

    • hymio on 02/02/2016 - 01:40
      +1

      I like the free version but I'm thinking about getting PRO for these features:
      - adjustable transition time
      - option to turn off Twilight service altogether during inactive times

      Would be nice to free up some space in my notifications dropdown when Twilight is inactive and I assume the first one means you can set when it starts to transition/how long it takes.

      Edit: Just realised you mean "screw it" as in "I'll buy it!" and not "Nahhh I'm keeping my 20 cents"… I'm gonna do screw it #1 too!

      • 01001011 on 02/02/2016 - 12:38

        "- option to turn off Twilight service altogether during inactive times"

        Can't you just go to settings and click stop?

        • scrimshaw on 02/02/2016 - 12:42

          Twilight runs as in the background service which means it can auto-stop and auto-start as required.

          Hitting the STOP button does not terminate the service, it's still loaded in memory.

        • 01001011 on 02/02/2016 - 13:39

          Huh, i never knew that. How do we turn it off altogether? I bought this deal.

  • fryandlaurie on 02/02/2016 - 01:10
    +11

    I prefer using CF Lumen as it works at the hardware level and is very effective. It has a lot more filters as well including grayscale and colour blindness correction.

    Requires root. There is a freeload option to unlock pro features but it has a notification nag that you can disable quite easily.

    Made by the same person that developed SuperSU (Chainfire).

    https://play.google.com/store/apps/details?id=eu.chainfire.l…

    • jzdhgkd on 02/02/2016 - 01:49
      +5

      Cf lumen is soooo very much better if you have root!

    • Agret on 02/02/2016 - 02:34
      +2

      I used to use twilight then switched to cf.lumen and it was better but now I use cyanogen mod on my phone and it has the feature built into the rom, can't beat that :)

    • jazoom on 02/02/2016 - 07:17

      Except it doesn't work on my Nexus 6P :-(

    • Diji1 on 02/02/2016 - 08:48
      -4

      as it works at the hardware level

      … like every other app.

      and is very effective

      … like any other app that dims the display.

      This app is not special due to dimming the display in a special way.

      • kudoz on 02/02/2016 - 10:34

        Actually yes, it is special due to dimming in a special way - most recent Qualcomm chips have a hardware based function that can be controlled which means it's not software based (less memory, cpu and thus batter draw… even if it's only small).

        • elektron on 02/02/2016 - 11:18

          What about those using most recent Snapdragon chips?

        • kudoz on 02/02/2016 - 11:23

          @elektron:

          From recollection it's a hardware function built into every chip from the original Snapdragon 800 onwards

        • elektron on 02/02/2016 - 11:25
          -2

          @kudoz83: Ok, so not just Qualcom then

        • ESEMCE on 02/02/2016 - 11:39
          +3

          @elektron:
          Snapdragon chips are made by Qualcomm..

        • elektron on 02/02/2016 - 11:41

          @scubacoles: Thanks!

        • fryandlaurie on 02/02/2016 - 12:27

          Usually you need a custom kernel too in my experience to enable KCAL or whatever it is called.

    • Binchicken22 on 02/02/2016 - 09:51
      +1

      Yeah requires root is the big difference here though. That rules out about 99% of Android users.

    • RocketSwitch on 02/02/2016 - 10:00
      +1

      Yep, I prefer this too. Great app!

    • illumination on 02/02/2016 - 15:23
      +1

      I used CF Lumen for a while and it was great at the start. After a while, for some reason it wouldn't allow me to reduce the brightness to below the default level. It seemed to be after I changed phones. Maybe it's not compatible with my phone's hardware? Using Xiaomi Redmi Note 2.

      And yes, my phone is rooted.

      • fryandlaurie on 02/02/2016 - 16:30
        +1

        Definitely send the developer an email to see if there is a fix.

  • spadge07 on 02/02/2016 - 02:45
    +1

    Haven't used Twilight but I tried five or six of these blue filter apps before I found one I liked that has decent functionality - it's called Darker. 2:45am and it is running…

    • systmworks on 02/02/2016 - 06:34
      +13

      Does it work? 2:45AM and you are browsing Ozbargain rather than sleeping… :)

      • [Deactivated] on 02/02/2016 - 09:55
        +5

        But Bargains never sleep

  • Iqs on 02/02/2016 - 03:39
    +3

    I am feeling sleepy already.

  • chonghe on 02/02/2016 - 06:49
    +7

    I don't know what is this but since it's only $0.20 and got upvotes I just buy it

    • 01001011 on 02/02/2016 - 12:42

      It's for in night time viewing.
      The theory is white light wakes you up. By using red light you will remain sleepy, will not hurt eyes when dimmed, not hurt night vision etc.

      • RocketSwitch on 03/02/2016 - 10:57

        Yep, the red light is awesome. Before this the white light used to knock me out and I would usually throw the phone across the room. Now the red light, doesn't hurt my eyes.

  • hopper on 02/02/2016 - 07:44

    Thx Op finally used 20c out of my 40c balance from Telstra credit…. Still 20c remaining to Spend by tomorrow :)

  • aurotaro on 02/02/2016 - 08:01
    +6

    Good deal. Bought it.

    For my PC, I use F.Lux and it's free. Highly recommend it.

    • kudoz on 02/02/2016 - 10:35
      +2

      Flux is indeed the ducks nuts! One of the first things I install on any new pc / mac build

  • nicois on 02/02/2016 - 08:21

    Unless you have root and use something like Screen Filter (maybe cf.lumen, I haven't tried it) you will be disappointed, as they don't/can't reduce the intensity over the navigation soft keys.

  • ss207k on 02/02/2016 - 08:23

    Thanks for this one OP. I'd been using screen filter for years, this one's got more features and definitely can't go wrong spending 20c!

  • Sergeant Salami on 02/02/2016 - 08:24

    I've been using it for months! I was going to purchase the full version last week. Lucky I didn't!

  • gooseberry on 02/02/2016 - 09:22

    Just got another $0.31 in Google Opinion Rewards credit this morning. Time to use up my backlog of credits.

  • soggyandugly on 02/02/2016 - 10:17
    +1

    Just FYI for people with AMOLED displays - THIS AND SIMILAR APPS WILL CAUSE PERMANENT ORANGE/RED BURN IN.

    I was using a similar appo for about a year that also turns the screen red, but after reading a post on reddit, I immediately disabled the app and had a closer look at my screen.Yep, there was burn in. Noticeable if you look from your home page (So the notification bar is transparent). Everything but the notification bar area is orangey/reddy tinted.

    Mine isn't that bad unless you look up close though. If you're looking at it from a normal viewing distance you cant really tell unless you're looking at the notification bar area from the home screen. Just a warning for those with AMOLED displays. Alternatively, I use screen filter

    • iridiumstem on 02/02/2016 - 10:58

      I don't think this is the cause. As far as I know burn in happens because of the blue diode or pixel or whatever you call those things in English dying faster than red and green ones.

      If you go on reddit, as far as I could see, no one has a proof that it's the app. It can as well be other things.

      • soggyandugly on 02/02/2016 - 11:21

        Googling AMOLED and burn in shows heaps of results. So i'm gonna say it's likely that it is the app in my case at least. If that red filter is on from sundown to sunrise then I'm willing to bet that it is the cause (that's approx 10 - 12 hours a day), especially considering that the notification bar has no burn in at all (since it's black most of the time, and pixels are off). This is exactly what my note has, only more orange/red.

        Can I ask what you think the cause might be if it isn't the app?

        • iridiumstem on 02/02/2016 - 11:45

          Normal usage. Amoled burns in because of the blue pixels or whatever you call those in English dying faster than other two colours red and green.

          So displaying red or orange tint shouldn't cause burn in in amoled like you are describing. Burn in happens because you are using the blue pixels causing them to wear out, like white colours (using all RGB) blue colours etc. The burn in on notification bar is because the darker areas don't use blue pixels as much, causing a contrast from the areas that do like icons on the notification bar.

      • ESEMCE on 02/02/2016 - 11:43
        +1

        I thought it was Green that burned out faster, and that's why they have GRBG (ie extra Green subpixels) in a pentile matrix screen, so the green can run at lower brightness per subpixel, but still retain overall brightness.

        Having said that, Blue burning out would explain a red/orange colouration.
        There's no doubt that AMOLED suffers from some level of screen burn, especially in the menu bar area which is static on screen, espeically if you have a white /grey bar which will light up the blue/green pixels.
        But in this case, having a reddish hue to the screen should reduce the output of the blue and green pixels from what they'd normally be and therefore reduce screen burn.

        • iridiumstem on 02/02/2016 - 11:59

          I thought having more green was for eyes responding more to green (causing the screen to look brighter) and less overall pixel required for higher resolution, all of which helps with burn in because brightness and size of the pixel affect the burn in process.

          Not too sure though, I did phase out a bit on people talking about pentile pattern because it really didn't interest me that much.

        • ESEMCE on 02/02/2016 - 13:58

          @Oversimplified:
          You're right.. Blue is most prone to burn out, then green, then red. (green is most easily detected by the eye, hence smaller green subpixels)
          Therefore for these screen filters that decrease blue and increase red/orange brightness should, if anything, increase the "wear" on the red subpixels which have a higher lifespan and subsequently reduce screen burn.

    • Ryballs on 02/02/2016 - 13:29
      +1

      Showing everything with a red tint would prevent red burn-in, not cause it.

      • ESEMCE on 02/02/2016 - 14:00

        Burn in is a reduction in output from the subpixel, so a red screen will decrease the output of the red subpixels.
        As a result, you'd have comparatively brighter blue and green pixels and therefore should have a blue/green tint to the screen.

  • peterpeterpumpkin on 02/02/2016 - 10:50
    +1

    I've been using the free version for quite a while now. And I take it as dim and red as I can handle it.

    The most annoying compromises that I can think of are:
    (1) At least with the free version, it assumes you're disciplined and dedicated to your hormone levels such that you wouldn't use your phone in a well-lit room after sunset. With my extreme settings I have to find a dark corner or maybe sit under a restaurant table just so I can see my screen well enough to pause it temporarily.
    (2) As with other screen filters, Android's in-built security settings will prevent you from pressing the checkbox "I trust this application" when accessing serious functions (e.g. full phone VPN tunneling). This is to avoid scenarios where a malicious app overlays something like "Do you like cute puppies?" over this checkbox. Autopause in settings doesn't appear to fix this issue (and may use more battery anyway apparently).

  • fleetoiler on 02/02/2016 - 10:57
    +4

    Bought.

    Have been using the free version for a month or so, love it. Even if you don't buy this app I'd recommend trying out the free but fully functional version. Highly customisable, you can make it as subtle or as dark/red as you like and disable it for certain apps or stop/pause it at will.

    The developers are the same mob as Sleep For Android which is an awesome program to help track your sleep patterns, record snoring/sound events, and even (do it's best attempt to) wake you up while you're in light sleep rather than your alarm going off in the middle of a cycle and feeling like **** for the rest of the day!!!

    The Twilight app in combination with Sleep for Android (and some better sleep hygiene) has helped optimize my sleeping patterns… still a lot to learn and implement in my routine but it all helps!

  • justwaitingforamate on 02/02/2016 - 11:14

    Whats the best one for iphone?
    I have just installed f.lux on my pc.

    • BargainCowboy on 02/02/2016 - 14:16

      No idea for iPhone, but f.lux is awesome.

    • miicah on 03/02/2016 - 13:25

      You need to Jailbreak to do anything like this on iPhones.

      • justwaitingforamate on 05/02/2016 - 12:17

        Dam…. thats shite… You would think there would have to be a market for apple to shaft us for more Pesso for an app like this

  • neonlight on 02/02/2016 - 12:09

    Paying with Google survey credits. Its literally free so why not? Its like Sleep cycle do you 100% trust it works?

    • kapone on 02/02/2016 - 12:35

      Not free if you value your time. Which isn't to say it's not worth it, just that there is still a cost, even if it's not directly a financial cost.

      • [Deactivated] on 02/02/2016 - 12:40

        You work non stop 24/7 and only get paid for your work and not per hour?

  • elektron on 02/02/2016 - 12:22

    It even supports Android Wear. Nice!

  • kapone on 02/02/2016 - 12:34
    +1

    Back to $2.99 :(

    • supnigs super skids on 02/02/2016 - 13:02
      +2

      i just bought it and paid 20c.

      • OZB Al on 02/02/2016 - 13:15

        Me too.

        • 01001011 on 02/02/2016 - 14:07

          Me three.
          Are you using a VPN?

        • kapone on 02/02/2016 - 20:22

          @01001011: Smart DNS, but no VPN. Will try disabling

        • kapone on 02/02/2016 - 20:24

          @kapone: Tried again before changing anything and it came up as .20c. Perhaps there was a brief window where it went back to the full price?

  • lordra on 02/02/2016 - 23:06
    +2

    I cannot recommend this app enough, been using it for 2 years, I got the pro, just to support the developers. Amazing, helps in cinemas, while driving around night and in bed. The red overlay can be controlled, as can the screen dimming. Be aware that some apps will not function, eBay item descriptions will not scroll and banking apps don't like it either.
    But that's fine, best thing ever!

  • devs on 03/02/2016 - 11:05

    For those thinking that Twilight is essentially F.lux from your PC, this is very much untrue.
    Twilight is basically a screen filter and does not actually modify the colors at all. For that matter, no app without Root can modify the colors. Cf.lumen is the only app (with root) that modifies colors just like F.lux does on PC.

    Also according to the F.lux guys, "…Dimming without tint is a better solution than any non-root apps can do. Some apps add red but don't really decrease blue."

    Some more information from the F.lux forums: "…Twilight's default setting is called "1500K" but actually measures 5100K, which perhaps explains why you are seeing it as "more white", because the number is not real. f.lux makes extremely accurate colors, and so the comparison is difficult to do by eye, because you are comparing two settings that are unrelated.

    For comparison, here are our measurements of twilight's default settings:
    https://fluxometer.com/rainbow/#!id=Nexus 4 Apps/twilight1500-nexus4

    f.lux maintains most of your screen contrast - we preserve the native black point exactly, and in doing so, we preserve a large percentage of visual contrast, allowing use in darker rooms, and also improving your eye's ability to adapt to color changes.

    Display manufacturers have worked hard for years to achieve white:black contrast ratios of 1000:1 and greater, and using Twilight to reduce this to 5:1 is just very silly. In doing so, you will actually wind up keeping your screen brighter (you will dim it less) in order to keep the screen readable.

    The "transparency" control has no equivalent in f.lux, because we never reduce contrast by boosting black levels. This control is all about how much extra light to put into the blacks, and we do not and will not do this. If you have extra contrast to burn, dimming your screen is probably a better idea.

    Also, color adaptation (perceiving "white") depends to some extent on the "surround" light - if you are in a room without very dim incandescent, you probably will see any f.lux setting below 2700K as "orange". If you want a whiter screen, our recommendation is to dim the display and use a higher color temperature setting instead."

    You can find out more information here and here.

    tl;dr, Twilight ≠ F.lux.
    if you have root, use cf.lumen. F.lux also has an Android beta you can ask to be a part of if you reach them through Twitter (would also require root).

    • supnigs super skids on 03/02/2016 - 20:58

      The reason for the colour difference is because there are many android devices with varying colour temp as standard. The app works fine most of the time anyway. Better than not using anything :)

  • shavi on 03/02/2016 - 16:23

    Thanks op. Got it.

    Not really sure what I'm doing to get maximum benefit. My settings are currently:
    Colour temperature: 1511k
    Intensity: 40%
    Screen Dim: 10%

    What settings are people using?

    • scrimshaw on 03/02/2016 - 18:07
      +1

      Color temperature is how warm your filter is. Adjust a level where your eyes are comfortable with without making things too red.

      Intensity is the opacity of the filter.

      Screen dim doesn't control the backlight but rather just adds a 'black' filter to give the impression that the screen is darker.

      This setting works better on AMOLED devices.

  • gnarly on 03/02/2016 - 23:00

    I prefer Lux on Android

  • DauntingEarth on 04/02/2016 - 00:44

    hey just found out this app blocks the install button at the bottom when installing new apps does this happen to anyone too? android user here

    • OZB Al on 04/02/2016 - 08:33

      Go to "More settings", "Exclude apps from filtering", this will enable the "Fix APK Install and Grant permission" option by default to fix this issue. Also allows you to exclude your media player or other apps if you want to.

    • ESEMCE on 04/02/2016 - 11:58

      I just Pause the app.

  • stephendt on 08/02/2016 - 19:23

    Cyanogenmod has a better screen colour temperature system built in but it's not available for every phone I guess.

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