SpanWall Download free

For Macs with more than one screen

One wallpaper.
Every monitor.
Perfectly lined up.

SpanWall stretches one picture, live scene or video across all your screens at their real size, so the horizon stays straight from one monitor to the next. And a little pet walks between them.

Download free for Mac See what Pro adds

Free forever, with 14 days of everything included · macOS 14 or newer · Apple silicon and Intel

Three monitors, three sizes, one picture. Click Mochi.

Why it looks right on your desk

Other apps cut a picture into equal slices by pixels. If your monitors are different sizes, the picture jumps at every edge. SpanWall measures each screen in real centimetres and hides the part of the picture that falls behind the bezels, so it lines up like a window.

Other apps: sliced by pixels, so the horizon breaks
SpanWall: real sizes and bezel gaps, so one straight line
🖼️

Spanning wallpapers

Any number of monitors, any sizes, any arrangement. Drag your screens into place in the layout editor and fine-tune the bezel gaps.

✨

Live scenes across screens

Comets, UFO patrols, aurora and fireflies that fly from one monitor to the next as if they were one big screen.

Pro
🎬

Video wallpapers

One video stretched across every screen and kept in sync.

Pro
🧭

“For My Wall” picks

The gallery suggests panoramas that fit your exact wall shape, so nothing important falls behind a bezel.

🔗

Link other computers

A Windows PC or Linux box next to your Mac? Its screens join the same wall. Free small helper apps for Windows and Linux.

Pro
🌙

Rotation and screen saver

A new wallpaper every hour or every day, and a spanning screen saver that uses the whole wall.

Pro

New

A desktop pet that lives on all your screens

Your buddy walks along the bottom of every monitor and hops across the gaps. Like a real cat it lounges, washes, stretches, plays, and takes long naps. Pick it up and drop it, let its eyes follow your pointer, or switch on chase mode.

Mochi is free. The other five, and your own pet, come with Pro. Tap a pet to see its moves.

For people who code

Your cat tells you when the build is done

Claude Code, Codex, your test runner or any script can send your buddy a message. It hops and shows it in a speech bubble on whichever screen it's on. It only listens to programs on your own Mac.

Double-click it to chat. Plug in Claude, ChatGPT or Grok with your own key, or use a free model that runs on your Mac (Ollama or LM Studio). It can switch wallpapers, set reminders and take naps when you ask.

# any script, when it's done
curl -s -X POST 'http://127.0.0.1:47822/notify?source=Build' \
     -d 'Tests passed ✅'
BuildTests passed ✅

Pay once. Keep it.

No subscription. Every download starts with 14 days of everything, then keeps working as the free version unless you upgrade.

Free

$0
  • Spanning still wallpapers, any number of monitors
  • Real-size layout editor and bezel gaps
  • Wallpaper gallery and top “For My Wall” picks
  • Ping-Pong Orb live scene
  • Mochi the desktop kitten, with notifications and built-in commands
Download free
Most popular

Pro

$14.99
  • Everything in Free, plus:
  • All live scenes and video wallpapers
  • Link Windows, Linux and Mac screens into one wall
  • All suggestions, rotation, screen saver, export
  • All six pets and AI chat
  • Add your own pet
Buy Pro

Link

$29.99
  • Everything in Pro, plus:
  • One mouse and keyboard across Mac, Windows and Linux
  • Copy on one computer, paste on another
  • Encrypted, works on your home network
Buy Link

Not happy? Full refund within 30 days. One licence covers your whole wall: linked Windows and Linux computers don't need their own.

Made just for you

Turn your pet into a desktop buddy

Send a few photos or a short video of your cat or dog. We turn them into a cartoon version of your pet, with their own colours and markings, that walks, naps and plays across your monitors.

  1. Send photos. The whole body, side-on, in good light works best.
  2. We make it. Usually within 2 days.
  3. Double-click the file we email you, and your pet moves in.
Send your photos Your pet + Pro $24.99 · already have Pro? $9.99

Questions

How many monitors does it support?

As many as your Mac can connect, in any arrangement and any mix of sizes. Linked Windows and Linux computers can add their screens too.

Which Macs does it run on?

Any Mac with macOS 14 (Sonoma) or newer, on Apple silicon or Intel.

Is it a subscription?

No. Pro and Link are one-time purchases. Updates for version 1 are included.

What happens after the 14-day trial?

SpanWall keeps working as the free version: spanning wallpapers, the layout editor, the gallery, the Ping-Pong Orb scene and Mochi. Buy Pro any time and everything comes back exactly as you set it up.

Will it slow my Mac down?

A still wallpaper costs nothing once it's set. Live scenes and videos use your graphics card while they play, and you can switch them off with one click. The pet is tiny and naps a lot.

Does the pet get in the way?

It walks along the very bottom of your screens and only takes clicks on its own body. You can keep it behind your windows, make it smaller, or hide it.

Is the AI chat private?

Your messages go only to the AI service you pick, using your own key, and nowhere else. Choose Ollama or LM Studio and nothing leaves your Mac. Notifications only accept programs on your own Mac.

Do I need SpanWall Link for Windows or Linux wallpapers?

No. Pro already links Windows and Linux screens into your wall. Link adds sharing one mouse and keyboard between the computers.

How do I get help?

Email support. A real person answers.

Make your desk one big picture.

Download SpanWall free

Windows or Linux helper: Windows · Linux (.deb) · Linux (.tar.gz)