Twilight is a screen tinting and contrast control app for Android that is designed to reduce the level of blue light emitted by your device to cut down on sleep issues. Blue light exposure in the evening has been linked with sleep disruption as well as linked to migraine as a trigger.  By default it looks at your local sunrise and sunset times and filters out more and more blue later in the evening, but it can also be set to a static level of filtering throughout the day.

The Ergohacks Verdict

Twilight does exactly what it claims to do. It filters out blue spectrum light and softens the screen automatically as daylight fades. I have found it very helpful for general use, but as it changes colour, it doesn’t work well for video or games. It is excellent for anyone who regularly reads on their phone/tablet in the evenings, whether it’s a novel, browsing the internet or social media. I find it useful during a migraine as I seem to be a lot more sensitive to blue light.

It is generally recommended not to use backlit devices for a couple of hours before going to sleep, but if you do, we definitely recommend using a blue light filtering app. Twilight has been my go-to app for some time and I have been very satisfied with its minimal effort performance. The Nougat Android update added a blue light filter as part of the operating system, but for those who do not have it, Twilight does an excellent job.

Ergohacks EssentialBuy it from Google Play +

Price: Free with no in app adverts or purchases.
Twilight Pro Unlock with additional features £2.99/$2.99

About Urbandroid

“In 2010 with the arrival of first Android smartphones we started our mission. Utilizing this new kind of technology and its sensors to the limit. Inventing new applications to ease and enhance everyday urban life. This is Urbandroid! Since then we brought over 20 different products to the market a gained millions of satisfied users. We are always at the hunt for new ideas. Stay tuned!”*

Urbandroid Team: Petr Nalevka, Martin Stava, Marcel Matula, Jiri Richter, Florian Schulte – design lead


Write a short description of the product – look, feel, how it works, mention any noteworthy features (artistic, educational, non-violent, unique).
For Books: Write short paragraph mentioning themes dealing with education, history, gender, inequality, religion, science, technology.

  • Target audience: Everyone who uses backlit Android devices in the evening.
  • Target age range: All ages
  • Target gender: Unisex/gender neutral design
  • Special considerations: Holds great potential for migraine triggered by blue light.


Platform: Android
Rating: PEGI 3+
Size: Varies with device
Regularly updated: Yes
Sound: Runs quiet with no sound

 We based our Ergohacks Verdict on 18 months of using the Twilight App on a variety of Android phones, including Nexus, HTC and Samsung smartphones. This article was first published on 18 September 2014 and last updated on 28 June 2017.