Star Trails — a live screensaver and wallpaper for your Mac.

Real-time · Space · PremiumFree this month

A long exposure of the sky wheeling round the pole above a dark ridge, trails growing longer and longer.

A long exposure of the sky wheeling round the pole above a dark ridge, trails growing longer and longer.

It runs natively on your Mac, drawn live in real time – no video, never quite the same twice.

Use it on your Mac

  1. Get SCRNSVRS free from the Mac App Store.
  2. Select Star Trails in the library.
  3. Click Set as Screensaver or Set as Wallpaper – or both.
Download on the Mac App StorePreview free · macOS Tahoe 26 or later

Star Trails FAQ

How do I set Star Trails as my screensaver on a Mac?

Install SCRNSVRS free from the Mac App Store, select Star Trails 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 Trails as a live wallpaper?

Yes. Click Set as Wallpaper in SCRNSVRS and Star Trails plays on your desktop behind your windows and icons. You can use it as screensaver and wallpaper at the same time.

Is Star Trails free?

Star Trails 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 Trails a video loop?

No. Star Trails 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 Trails 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 Trails costs next to nothing in everyday use.

Which Macs does Star Trails run on?

Star Trails needs macOS Tahoe 26 or later.

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