Lights in the dark seen through a diffraction grating, each spread into rainbows on either side.
Lights in the dark seen through a diffraction grating, each spread into rainbows on either side.
In the app you can adjust the spread. It runs natively on your Mac, drawn live in real time – no video, never quite the same twice.
Use it on your Mac
- Get SCRNSVRS free from the Mac App Store.
- Select Diffraction Grating in the library.
- Click Set as Screensaver or Set as Wallpaper – or both.
Preview free · macOS Tahoe 26 or laterNeed a hand? Read the setup guide.
Diffraction Grating FAQ
How do I set Diffraction Grating as my screensaver on a Mac?
Install SCRNSVRS free from the Mac App Store, select Diffraction Grating 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 Diffraction Grating as a live wallpaper?
Yes. Click Set as Wallpaper in SCRNSVRS and Diffraction Grating plays on your desktop behind your windows and icons. You can use it as screensaver and wallpaper at the same time.
Is Diffraction Grating free?
Diffraction Grating 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 Diffraction Grating a video loop?
No. Diffraction Grating is rendered live on your Mac with Metal, so it never repeats and stays sharp on any display size. The clip on this page is a screen recording of the real thing.
Will Diffraction Grating 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 Diffraction Grating costs next to nothing in everyday use.
Which Macs does Diffraction Grating run on?
Diffraction Grating needs macOS Tahoe 26 or later.
