# After-Dark Display Apps This Blue Light Filter App Protects Your Eyes from Harmful Backlit Screens By Amelia Roblin | Published 2015-03-17 | Tech Source: Trend Hunter, https://www.trendhunter.com/trends/blue-light-filter References: [play.google](https://play.google.com/store/apps/details?id=com.urbandroid.lux) Tired days, sleepless nights, strained vision and dark circles could better be avoided with a blue light filter on your gadgets. Most electronic devices with a backlit screens emit a 460 to 480nm range of illumination that impedes melatonin production in you brain, keeping you from getting a good rest and a deep slumber. Like f.lux, Twilight adjusts the lighting of your display to a warmer tone, eliminating the blue and introducing a red tinge in its place. While the Urbandroid Team's split images demonstrate a noticeable difference between the seemingly white and Twilight-filtered views, the experience of using the tablet and smartphone app is actually quite subtle. Modifying the color according to your [local sun cycle](https://www.trendhunter.com/trends/sunseek), this blue light filter produces a soft and natural glow that's gentle on your eyes in the evening. ## Trend Insights (Trend Hunter) - Score: 3.9/10 - Popularity: 50% | Activity: 59% | Freshness: 8% - Audience gender: 50% men, 50% women - Primary generations: Gen Z, Millennial, Gen X - Top markets: North America, Europe, Asia ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Tech](https://www.trendhunter.com/tech) > [Gadgets](https://www.trendhunter.com/gadgets) ## Key Themes ### What Makes This Trend Stand Out - **Blue Light Filter Apps:** Opportunity for app developers to create blue light filter apps that protect users' eyes from harmful backlit screens. ### Sectors Adopting This - **Mobile App Development:** Disruptive innovation opportunity for mobile app developers to create blue light filter apps. ## Related on Trend Hunter - [Stylish Sleep-Improving Eyewear](https://www.trendhunter.com/trends/premium-blue-light-glasses.md) - [Blue Light-Free Tablets](https://www.trendhunter.com/trends/daylight-dc1.md) - [Integrated Eye Health Apps](https://www.trendhunter.com/trends/eye-health.md) - [Eye-Friendly Monitor Technologies](https://www.trendhunter.com/trends/hannspree-hybri-monitor.md) - [Digital Wellness Supplements](https://www.trendhunter.com/trends/digital-wellness-supplement.md) - [Circadian Bedside Lamps](https://www.trendhunter.com/trends/wake-lamp.md) - [Digital Eye Health Preservation](https://www.trendhunter.com/trends/blink-eye.md) - [Eye Health Timers](https://www.trendhunter.com/trends/blinkblink.md) - [Wearable Sleep-Aiding Gadgets](https://www.trendhunter.com/trends/retimer.md)