Chromatic Fog — a live screensaver and wallpaper for your Mac.

Real-time · Still · PremiumFree this month

Sheets of fog in different colours drifting in front of a hidden light that warms the nearest edges.

Sheets of fog in different colours drifting in front of a hidden light that warms the nearest edges.

In the app you can adjust the colours, density and glow, keep one variation or get a new one every time, and choose how often it fades to the next. Nothing moves in between, so it uses almost no energy – one still image, drawn natively on your Mac at full resolution.

Use it on your Mac

  1. Get SCRNSVRS free from the Mac App Store.
  2. Select Chromatic Fog in the library.
  3. Click Set as Screensaver or Set as Wallpaper – or both.
Download on the Mac App StorePreview free · macOS Tahoe 26 or later

Chromatic Fog FAQ

How do I set Chromatic Fog as my screensaver on a Mac?

Install SCRNSVRS free from the Mac App Store, select Chromatic Fog in the library and click Set as Screensaver. macOS starts it whenever your Mac is idle, exactly like a built-in screensaver.

Can I use Chromatic Fog as a live wallpaper?

Yes. Click Set as Wallpaper in SCRNSVRS and Chromatic Fog plays on your desktop behind your windows and icons. You can use it as screensaver and wallpaper at the same time.

Is Chromatic Fog free?

Chromatic Fog is included in SCRNSVRS Unlimited. It's free for your first 7 days; after that Unlimited is $1.99/month or $9.99/year (€1.99/month or €9.99/year) for every screensaver, including new ones. It can also come up in Free this month, when 25 premium screensavers are free for everyone.

Is Chromatic Fog a video loop?

No. Chromatic Fog is drawn on your Mac with Metal at your display's full resolution, then holds still, so it stays sharp on any display size and uses almost no energy. The preview on this page is a capture of the real thing.

Will Chromatic Fog slow down my Mac or drain the battery?

No. SCRNSVRS drops to 30 fps on battery and stops rendering when the wallpaper is covered by a full-screen app, so Chromatic Fog costs next to nothing in everyday use.

Which Macs does Chromatic Fog run on?

Chromatic Fog needs macOS Tahoe 26 or later.

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