Does Grayscale Mode Reduce Screen Time?
By Max Ward, co-founder of DisConnect ·
Short answer: a little. In a 2024 University of Amsterdam study, one week of grayscale cut phone use by about 20 minutes a day, from roughly 4.8 hours to 4.5, and people felt more in control and less stressed. It didn't change how often they unlocked their phones, so the habit itself stays.
What does the research say about grayscale?
The best recent test is Dekker and Baumgartner's study in Mobile Media & Communication (2024). 84 adults logged their phone use for a normal week, then switched their screens to grayscale for a second week. Average daily screen time dropped from 287 to 268 minutes, a real but modest change. Unlocks didn't move at all: about 80 a day before and after.
The softer results were better. People reported feeling more in control of their phone, less like they were overusing it, less pulled to check it, and less stressed. Sleep quality and productivity didn't change. Earlier work at the University of Cincinnati Blue Ash reported a larger drop, about 39 minutes a day in a group of roughly 220 students, so expect anywhere from a small dent to a noticeable one.
Why does grayscale make your phone less appealing?
Because colour is part of the bait. Red notification badges, saturated thumbnails and glossy app icons are designed to grab you. Drain the colour and the feed gets duller to look at, so you put it down a bit sooner. It doesn't stop you picking the phone up, which is why unlocks stayed flat in the study.
How do I turn on grayscale on an iPhone?
- Open Settings > Accessibility > Display & Text Size > Color Filters.
- Turn on Color Filters and choose Grayscale.
- Optional: set Settings > Accessibility > Accessibility Shortcut to Color Filters, so a triple-click of the side button toggles it when you need colour for photos or maps.
Is grayscale enough on its own?
Probably not. Twenty minutes off a four-and-a-half-hour day is a start, and the same triple-click that turns grayscale off for a photo turns it off for TikTok. Grayscale makes apps less fun. It doesn't make them harder to open. Pair it with friction that actually holds (do app blockers actually work?), and see the full setup in how to make your iPhone less addictive or go further with turning it into a dumb phone.
The DisConnect Card is the friction part. It's a physical NFC card that works with the free DisConnect app for iPhone: pick the apps that eat your day, tap the card to block them, and they stay blocked until you tap it again. Keep the card in another room and grayscale stops being your only defence.
Grayscale dulls the feed. The card locks it. The DisConnect Card is $39 one-time, needs no battery, and works with the free DisConnect app for iPhone. 30-day money-back guarantee.
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Questions people ask
Does grayscale mode reduce screen time?
A little. A 2024 University of Amsterdam study found one week of grayscale cut daily phone use by about 20 minutes, from 287 to 268 minutes, and reduced stress, but unlocks stayed at about 80 a day.
How do I turn on grayscale on an iPhone?
Go to Settings > Accessibility > Display & Text Size > Color Filters, turn on Color Filters and choose Grayscale. Set the Accessibility Shortcut to Color Filters to toggle it with a triple-click.
Is grayscale enough to stop phone addiction?
Usually not. It makes apps less appealing but not harder to open, so pair it with a block that takes real effort to undo.
