A globular cluster of tens of thousands of stars, crowded and warm at the core with scattered red giants and blue stragglers, turning slowly in front of a sparse field of distant stars.
A globular cluster of tens of thousands of stars, crowded and warm at the core with scattered red giants and blue stragglers, turning slowly in front of a sparse field of distant stars.
In the app you can adjust the colours, stars, rotation and core size. 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 Star Cluster 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.
Star Cluster FAQ
How do I set Star Cluster as my screensaver on a Mac?
Install SCRNSVRS free from the Mac App Store, select Star Cluster 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 Star Cluster as a live wallpaper?
Yes. Click Set as Wallpaper in SCRNSVRS and Star Cluster plays on your desktop behind your windows and icons. You can use it as screensaver and wallpaper at the same time.
Is Star Cluster free?
Star Cluster 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 Star Cluster a video loop?
No. Star Cluster 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 Star Cluster 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 Star Cluster costs next to nothing in everyday use.
Which Macs does Star Cluster run on?
Star Cluster needs macOS Tahoe 26 or later.
