Interlacing half-circles of bright bands split by thin white pinstripes, colours running round them.
Interlacing half-circles of bright bands split by thin white pinstripes, colours running round them.
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 Protractor Arcs 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.
Protractor Arcs FAQ
How do I set Protractor Arcs as my screensaver on a Mac?
Install SCRNSVRS free from the Mac App Store, select Protractor Arcs 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 Protractor Arcs as a live wallpaper?
Yes. Click Set as Wallpaper in SCRNSVRS and Protractor Arcs plays on your desktop behind your windows and icons. You can use it as screensaver and wallpaper at the same time.
Is Protractor Arcs free?
Protractor Arcs 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 Protractor Arcs a video loop?
No. Protractor Arcs 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 Protractor Arcs 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 Protractor Arcs costs next to nothing in everyday use.
Which Macs does Protractor Arcs run on?
Protractor Arcs needs macOS Tahoe 26 or later.
