Does grayscale reduce screen time? Try it on your iPhone

What grayscale can realistically change

Grayscale removes colour from the display. It does not remove recommendations, autoplay, messages or the next video. Think of it as a change to how your phone looks, rather than a limit on what you can open.

In a study of 161 undergraduates, 73 switched to grayscale for eight to ten days. Those participants spent less time on social media and web browsing than at baseline, but video time did not appear to change. A short study in students cannot tell you whether the effect will last for you. It also does not establish grayscale as a treatment for anxiety or depression. See the research notes below.

Turn on grayscale on iPhone

Open Settings → Accessibility → Display & Text Size → Color Filters. Turn on Color Filters, then select Grayscale. To return to your usual display, switch Color Filters off. Apple documents the steps in its display settings guide.

Try your everyday tasks before leaving it on: reading a map, checking a chart, choosing a photo, or using an app that identifies things by colour. If colour is necessary for a task, turn it back on. Keep any accessibility settings you rely on; reducing scrolling should not make your phone harder to use for essential tasks.

Pick one app and compare ordinary days

Choose the feed you actually want to spend less time in. Before changing the display, check its recent Screen Time history. Write down its daily minutes across a few typical days. A total that includes navigation, work and video calls is a poor measure of whether your evening scrolling changed.

Then try grayscale for a week and check that same app. Keep a brief note if a day is unusual: travelling, working late, or staying home ill. Comparing a busy workday with a free Sunday can make a setting look more effective than it was. This is a personal experiment, not a controlled trial.

If you want to learn whether grayscale helps, avoid changing five other settings at once. If you mainly want relief now, combine tools as needed; just do not give grayscale all the credit for the result.

Notice the workaround, not just the number

You may spend less time in one app but move to its website, another feed, or your laptop. You may switch colour back on every time a video starts. Those are useful observations. Write down what you wanted at that moment: entertainment, a reply, company, or something to postpone a difficult task.

Match the next change to that observation. For repeated video sessions, try a clear stopping point for short videos. If checking begins with alerts, adjust distracting notifications. A display setting cannot decide when you are finished.

Keep it only if the trade-off works

At the end of the week, ask two questions: did the unwanted scrolling change, and did necessary phone use become annoying? Keep grayscale if it helps at an acceptable cost. Turn it off if it does not, or use it only during the part of the day you were trying to protect.

You have not failed if you prefer colour. The useful outcome is learning which boundary changes your behaviour. If you need an actual access limit, compare App Limits and Downtime rather than expecting a visual setting to block an app.