Waves squeezing through two slits and interfering, while single hits slowly build the stripes on a screen.
Waves squeezing through two slits and interfering, while single hits slowly build the stripes on a screen.
In the app you can adjust the colours and slit spacing. 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 Double Slit 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.
Double Slit FAQ
How do I set Double Slit as my screensaver on a Mac?
Install SCRNSVRS free from the Mac App Store, select Double Slit 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 Double Slit as a live wallpaper?
Yes. Click Set as Wallpaper in SCRNSVRS and Double Slit plays on your desktop behind your windows and icons. You can use it as screensaver and wallpaper at the same time.
Is Double Slit free?
Double Slit 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 Double Slit a video loop?
No. Double Slit 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 Double Slit 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 Double Slit costs next to nothing in everyday use.
Which Macs does Double Slit run on?
Double Slit needs macOS Tahoe 26 or later.
