Twilight Android App Automatically Changes Your Screen Brightness by Time of Day

Twilight is an Android app that automatically adjusts your device's brightness and color as the day progresses. It gradually reduces the normal bright and blue display we are familiar with to a redish calm color as evening approaches. Twilight helps to reduce eye strain that comes from staring at our device's screen for long.

Once installed, the app slowly adds a soft red filter over your display as the hours drag on. In the morning, your phone or tablet's screen will be bright white, but the app filters out the blues over time to try and reduce your exposure to the kind of bright, harsh light that keeps you awake at night and prevents you from falling into a deep sleep. The intensity of the red filter adjusts automatically, and is based on the sunset and sunrise times where you live. We tried the app out, and it works as advertised, although it takes a little getting used to at first.
Click to download Twilight App.