Twilight Blue light filter for better sleep

For those who have trouble falling asleep after using their Android devices throughout the day, especially before bedtime, the app Twilight provides a viable solution. Electronic devices emit a blue light that affects the levels of melatonin a person produces. The less melatonin a person produces, the less likely the person will feel sleepy.

Twilight, on devices it is installed on, will dim its lights during certain times of the day. The default settings adapt to the sunrise and sunset, but they can be adjusted, as necessary. Users agree that the Twilight app is easy to use, customize and install.