Circles and squares appear one after another and grow until they meet a neighbour, packing the screen into a mosaic shaded along a slow gradient, which then dissolves piece by piece and fills again.
Circles and squares appear one after another and grow until they meet a neighbour, packing the screen into a mosaic shaded along a slow gradient, which then dissolves piece by piece and fills again.
In the app you can adjust the colours, shapes and growth 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 Box Fit 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.
Box Fit FAQ
How do I set Box Fit as my screensaver on a Mac?
Install SCRNSVRS free from the Mac App Store, select Box Fit 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 Box Fit as a live wallpaper?
Yes. Click Set as Wallpaper in SCRNSVRS and Box Fit plays on your desktop behind your windows and icons. You can use it as screensaver and wallpaper at the same time.
Is Box Fit free?
Box Fit 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 Box Fit a video loop?
No. Box Fit 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 Box Fit 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 Box Fit costs next to nothing in everyday use.
Which Macs does Box Fit run on?
Box Fit needs macOS Tahoe 26 or later.
