Blue Light Filter – Night Mode

Platform: Android

At this point, it's more or less common knowledge that long-term exposure to the light from your phone, laptop, TV, etc. strains the eyes and this is due to the emission of blue light from these sources. While blue light at the right time drastically reduces its harmfulness like during the daytime, at night it's harmful, increases risk of degeneration and inhibits the hormone melatonin which regulates sleep and wakefulness, thus disrupting our sleep cycle and making it harder to fall asleep.

With five colour options available, this app simply sets up a filter of adjustable intensity of a different colourthat has a temperature less than blue light which decreases eye strainand allows late-night browsing. It also comes with an adjustable screen dimmer that allows you to reduce brightness below your phone's lower limit. A timer is included so you can choose at what time the app turns on and off. Easy to use and free, it only requires a purchase if you want to get rid of the ads. However, do not take screenshots when the app is in effect, since the filter shows up in your screenshot.

And no, there is no variation of the app called "morning mode".

Tl;dr: your eyes are important organs, this helps reduce eye straindue to screen light at night, get it for your own good.