Three lines of exactly the same length. As their end fins swing between arrowheads and tails, each one seems to stretch and shrink.
Three lines of exactly the same length. As their end fins swing between arrowheads and tails, each one seems to stretch and shrink.
In the app you can adjust the 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 Müller-Lyer 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.
Müller-Lyer FAQ
How do I set Müller-Lyer as my screensaver on a Mac?
Install SCRNSVRS free from the Mac App Store, select Müller-Lyer 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 Müller-Lyer as a live wallpaper?
Yes. Click Set as Wallpaper in SCRNSVRS and Müller-Lyer plays on your desktop behind your windows and icons. You can use it as screensaver and wallpaper at the same time.
Is Müller-Lyer free?
Müller-Lyer 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 Müller-Lyer a video loop?
No. Müller-Lyer 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 Müller-Lyer 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 Müller-Lyer costs next to nothing in everyday use.
Which Macs does Müller-Lyer run on?
Müller-Lyer needs macOS Tahoe 26 or later.
