Black and white

Grayscale, with a shortcut or on a schedule

Android · Free · built in

What it does

Turns the screen black and white, so apps look less vivid. Keep it on all the time, or let it switch on with a schedule.

Cost

Free, built in. Google says color correction isn't on every phone.

How to set it up

Settings › Accessibility › Color and motion › Color correction, and choose grayscale. Then turn on its shortcut, such as holding both volume keys or a Quick Settings tile.

On Samsung

Settings › Modes and Routines › Sleep, and add Grayscale. Menu names vary by model.

How easy to get around

Very easy: one tap or a button press.

What the evidence says

In a study, grayscale cut time on the phone but not how often people unlocked it. Pair it with a schedule.

Checked October 2026 · Source