Twilight: Blue light filter
OS : android Size : 5.11MBVersion : 14.10
Updated : January 12, 2026
Twilight: Blue Light Filter - A Comprehensive Review for Eye Comfort and Better Sleep
Twilight is a specialized utility application for Android devices designed to protect users' eyes and improve sleep quality by filtering harmful blue light emitted from smartphone screens. Its primary purpose is to automatically adjust the screen's color temperature and brightness based on the time of day and the user's environment, creating a more comfortable viewing experience. What sets Twilight apart from basic night mode features is its sophisticated, context-aware filtering technology, extensive customization options, and its focus on addressing both immediate eye comfort and long-term sleep health issues caused by prolonged screen exposure.

Exploring Twilight: Blue Light Filter: Core Experience Overview
Twilight operates as a background service that applies a soft, reddish overlay to the device's screen, effectively reducing the amount of blue light that reaches the user's eyes. This is particularly valuable during evening and nighttime usage, as blue light exposure after sunset can disrupt natural sleep cycles by suppressing melatonin production. The application intelligently adapts to the user's local sunset and sunrise times, ensuring protection is provided exactly when it's needed most.

Core Functions and Mechanics
As a utility-focused application, Twilight's core functionality revolves around its dynamic filtering system. It uses light sensors and time-based triggers to automatically apply and adjust its protective filter without requiring constant user intervention. The app employs advanced algorithms to recognize ambient lighting conditions, seamlessly transitioning between different filter intensities whether the user is indoors, outdoors, or in varying light environments. This automated approach ensures consistent eye protection while maintaining screen usability for reading, browsing, and other smartphone activities.

The Team Behind Twilight and Supported Platforms

Developer Background
Twilight was developed by Urbandroid Team, a Czech-based development group known for creating practical, user-focused Android applications that address everyday digital wellbeing concerns. The team has built a reputation for developing lightweight, efficient utilities that solve specific smartphone-related problems without unnecessary complexity or resource consumption.
Platform Availability and Access
Twilight is exclusively available for Android devices through the Google Play Store. The application maintains broad compatibility with Android versions 4.1 and above, ensuring accessibility for most Android users regardless of their device age or specifications. The basic version is free to download and use, with a premium version available that unlocks additional customization features and removes advertisements.
Essential Functional Systems of Twilight
Dynamic Brightness and Color Adjustment
Twilight's core functionality lies in its automatic brightness and color temperature adjustment system. The application continuously monitors ambient light conditions through the device's light sensor, dynamically adjusting screen filter intensity to match the environment. This ensures optimal eye comfort whether users are in bright sunlight or complete darkness. The system uses specialized protocols to detect environmental changes, providing appropriate protection even in challenging lighting conditions without compromising screen visibility.
Customizable Filter Profiles
The application offers multiple preset filter modes—Sun, Alarm, Custom, and Always—each designed for specific usage scenarios. Users can manually select these profiles or allow the app to automatically switch between them based on time and location. Each filter type provides different levels of blue light reduction and color shifting, with extensive customization options for intensity, color temperature, and transition duration. This flexibility allows users to tailor the filtering experience to their personal comfort preferences and visual needs.
Scheduled Protection and Profile Management
Twilight includes sophisticated scheduling capabilities that enable users to create and manage multiple protection profiles. These profiles can be programmed to activate automatically at specific times, durations, or based on sunset/sunrise patterns. The system ensures a gradual transition between different filter intensities, helping eyes adapt comfortably to changing light conditions. This scheduled approach guarantees consistent protection without requiring manual intervention, making eye protection a seamless part of the smartphone experience.
Multi-Platform Synchronization and Extended Protection
A significant advantage of Twilight is its ability to synchronize settings and usage patterns across multiple Android devices when using the same Google account. The application can extend its protective filtering to various content sources and applications, providing comprehensive coverage regardless of what users are viewing on their devices. Additionally, Twilight offers suggestions for complementary color settings and display adjustments that further enhance visual comfort while maintaining effective blue light protection.
User Feedback and Practical Highlights
Usability and Interface: Users consistently praise Twilight's simple, intuitive interface that makes complex light filtering accessible to non-technical users. The automatic operation requires minimal setup after initial configuration.
Effectiveness for Sleep Improvement: Many users report noticeable improvements in sleep quality, particularly those who previously experienced difficulty falling asleep after evening smartphone use. The gradual, automatic activation helps establish healthier pre-sleep routines.
Customization Depth: The extensive customization options receive positive feedback from users who want precise control over their filtering experience, though some find the number of options initially overwhelming.
Performance Impact: The application is generally regarded as lightweight with minimal battery impact, though performance can vary depending on device specifications and Android version.
Learning Curve: The automatic features make Twilight immediately useful for basic protection, while advanced customization options provide room for users to refine their experience over time.
Why Twilight Is Worth Trying
Twilight is ideally suited for anyone who spends significant time viewing smartphone screens, particularly during evening hours or in varying lighting conditions. Its primary strength lies in its automated, intelligent protection system that requires minimal user effort while delivering substantial benefits for eye comfort and sleep health. The application offers practical value by addressing a genuine health concern associated with modern smartphone usage through a free, accessible solution. Whether you're a casual user looking to reduce eye strain or someone struggling with sleep issues related to screen time, Twilight provides an effective, evidence-based approach to healthier smartphone habits without sacrificing functionality or convenience.
- Owner : Petr Nálevka (Urbandroid)
- System : android
- Category : Health & Fitness
- Update Time : January 12, 2026
- Version : 14.10
- Package ID : com.urbandroid.lux
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