This was posted 8 years 4 months 29 days ago, and might be an out-dated deal.

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Twilight Pro Unlock - $0.99 @ Google Play

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Twilight Pro Unlock is on sale for $0.99. Not as good as the 20c deal of the week as found previously on OZB here https://www.ozbargain.com.au/node/232877 but still a great price. For the n00bs, this helps remove white light that your LCD emits. The later in the day it gets, the more yellow/red the screen gets helping you sleep better at night.

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

Related Stores

Google Play
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Marketplace
urbandroid.org
urbandroid.org

closed Comments

  • Does this have any benefit on oled screens?

    • -2

      It's benefits are rather dubious to begin with in case you hadn't picked up on that with the amount of "may"s, "could"s and "possibly"'s in the description with a lack of anything more scientific than using the words "scientific studies" to convince you of it's abilities.

      So I would say no.

      • The vagueness in the language used is because individual results may vary & medicine & neuroscience are not exact sciences unlike mathematics for example.

        There definitely exist iprgc cells that respond maximally to blue light. These cells are connected to your internal body clock in the hypothalamus, which produces melatonin that enables you to sleep. Hence, exposure to blue light will effect this, but there is some individual variation. Long term studies are still ongoing but will most likely yield more conclusive results.

      • Good enough for Dr.Karl, good enough for me.

  • +3

    I prefer Lux.
    Twilight never worked properly for me

  • +3

    Or you could turn it off.

  • +2

    Twilight is great; even if the blue-light reducing effects don't work for you the amount you can 'dim' your screen by is amazing.

    • -4

      You're amazed by an app making a screen dimmer and that's why you think it's great.

      • +10

        Judging by your other comments you clearly don't like the app; judging the rest of your comment history you must be really fun at parties.

  • +2
    • Hey thanks for the heads up. I use f.lux on my PC but have been using CF.lumen on my phone as f.lux wasn't previously available on Android. Not that I've had any issues with CF.lumen, but I might give f.lux a go just to check it out.

      • +1

        Cflumen and F.lux seems to use different 'drivers'. Not sure what kind of sorcery or coding is invovled but Cf.lumen seems to be more compatible with my phones than F.lux.

        Twilight is the only screen dimming app that works on my older ASUS Memotab FHD tablet, but the red filter it puts on doesn't to reduce blues as much as F.lux on a PC does. It works by putting a red overlay on the screen as opposed to changing the hues of the display, which isn't effective.

    • -7

      Unrivalled in screen dimming? Whoa, bold claims. It must make a huge difference to using another app to dim your screen.

  • +1

    I bought this before. I would not recommend paying for this, the free version is needed anyway and does the same job.
    Also there are plenty of free apps that they do a better job. NO deal here.

    • Also there are plenty of free apps that they do a better job.

      What do you recommend?

      • +2

        Use the free version @MiniMoo if you like this. Usually other people recommendations might not fit your situation, but when you click on this link there are some similar apps on the side. I personally liked Dimly and Midnight (from US and Mexico but no permission, simple, user-friendly with filters) before I bought this, very similar and free (ads).
        It really depends on your needs but as I said before, my approach would be ; I head over to google play, search for the app, install a few of the popular apps with higher ranking, test them against their capabilities, spyware, permissions, developer's home country, price,… and then keep the best one.

  • I brought this last time it was on special. Wouldn't recommend. Its a bit hit an miss as to when it works. The default color is a horrible red.

  • I like it but need to turn it off when taking screenshots.

    You can adjust the red level. Give the free version a go for a night to see if it's worth buying.

  • If you're rooted I recommend CF.Lumen, you can swipe down and disable it. I'd give f.lux a miss atm as it is still a beta and buggy as (screen flickers colours) and it also doesn't have a quick way of disabling. I'd recommend trying the free version for now and purchase it if you want the additional features.

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