What Is a Blue Light Filter on Android and Which App Works Best?Blue light from screens impacts your health and disrupts your sleep, according to studies by Harvard and the NHS. Exposing yourself to blue light at night tricks your brain into thinking it's daytime, which suppresses the production of melatonin. Using a blue light filter on your Android phone, like the built-in Night Light feature or the app Twilight, can reduce the negative effects of blue light
