Twilight Blue light filter (Pro Unlocked) MOD APK v14.32

Twilight Blue light filter MOD APK is an Android app that adjusts your phone or tablet screen to the time of day. It reduces blue light after sunset with a soft red filter, using local sunset and sunrise times to adjust the intensity. You can also use it on Wear OS devices.

Time-based screen filtering

Twilight filters the blue light emitted by your screen after sunset and changes the filter strength smoothly through the sun cycle. The app is designed for late-evening phone and tablet use, including reading in bed and situations where you are sensitive to light during migraine. Its approach relates to research about blue light in the 460–480 nm range, the Melanopsin photoreceptor, melatonin production and sleep-wake cycles. One cited experimental finding reports that reading on a tablet or smartphone for a couple of hours before bed may delay sleep by about an hour.

Night reading and AMOLED screens

For bed reading, Twilight can lower the screen backlight below the level available through the device’s standard backlight controls. On AMOLED screens, the app can combine dimming with a more even light distribution by tinting dark areas such as the status bar.

Permissions and screen coverage

• Location access is used to determine your current sunset and sunrise times.
• Running-app access can stop Twilight in selected apps.
• Write-settings access is used to set the backlight.
• Network access can control Philips HUE smart lighting to reduce blue light from household lighting.
• Twilight Accessibility Service can filter notifications and the lock screen, and is used for screen filtering rather than collecting personal information.

Wear OS and automation

Twilight can synchronise your Wear OS screen with the filter settings on your phone. A Wear OS Tile lets you control filtering from the watch. Automation is available through Tasker or other automation tools.

Research and documentation

The app provides documentation and references covering melatonin, Melanopsin, circadian rhythms and circadian rhythm disorder. Its related research list includes work by Derk-Jan Dijk and colleagues in 2012; Joshua J. Gooley, Kyle Chamberlain, Kurt A. Smith and colleagues in 2011; Jeanne F. Duffy and Charles A. Czeisler in 2009; Claude Gronfier and Kenneth P. Wright in 2009; Kenneth P. Wright and Claude Gronfier in 2009; Nayantara Santhi and colleagues in 2008; and Farhan H. Zaidi and colleagues in 2007.

What this build changes

This build is labelled Pro Unlocked. The current release notes also list IKEA Dirigera support.

This build fits readers who use a phone or tablet late in the evening and want the screen filter to follow local sunset and sunrise times. It also suits Wear OS users who want the watch screen aligned with phone settings. Pass on it if your device runs an Android version below 7.0, because Android 7.0+ is the listed requirement. The 13.2 MB file is a practical consideration for installation.

Inside this build

The modification is labelled Pro Unlocked, so that is the change identified for this particular build. Twilight’s documented filtering, Wear OS controls, backlight adjustment and screen coverage remain the app’s stated functions. The current release notes also list IKEA Dirigera support.

Strengths

• Sunset-based adjustment keeps the filter tied to local daylight changes rather than one fixed evening setting.
• Notification and lock-screen filtering extends the screen treatment beyond the main app display.
• Wear OS synchronisation and a Wear OS Tile provide watch-based control of the filter.
• Selected-app controls and automation support give you ways to manage when filtering runs.

Trade-offs

• The 13.2 MB package requires Android 7.0 or later, which excludes older Android devices.
• Several functions require permissions for location, running apps, write settings or network access.
• Accessibility filtering requires enabling Twilight Accessibility Service for notifications and the lock screen.

Bottom line

Install this build if you need time-based screen filtering and the Pro Unlocked label matches what you are looking for. Check that the package is version 14.32 or otherwise matches the IKEA Dirigera release note before installing.