A soft tonal field drifting over a dot grid in which every dot has its own ordered-dither threshold, so dots fade on and off in crisp cross-hatched halftone patterns as the light passes.
A soft tonal field drifting over a dot grid in which every dot has its own ordered-dither threshold, so dots fade on and off in crisp cross-hatched halftone patterns as the light passes.
In the app you can adjust the colours, rows, dither size, dot size and drift speed. 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 Threshold Sweep 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.
Threshold Sweep FAQ
How do I set Threshold Sweep as my screensaver on a Mac?
Install SCRNSVRS free from the Mac App Store, select Threshold Sweep 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 Threshold Sweep as a live wallpaper?
Yes. Click Set as Wallpaper in SCRNSVRS and Threshold Sweep plays on your desktop behind your windows and icons. You can use it as screensaver and wallpaper at the same time.
Is Threshold Sweep free?
Threshold Sweep 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 Threshold Sweep a video loop?
No. Threshold Sweep 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 Threshold Sweep 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 Threshold Sweep costs next to nothing in everyday use.
Which Macs does Threshold Sweep run on?
Threshold Sweep needs macOS Tahoe 26 or later.
