MyDynScreen
macOS 15+ · Apple silicon & Intel

One scene, across every Mac display.

Hand it a video. It cuts the picture to the exact geometry of your Mac displays and sets it as your desktop wallpaper. Not three copies side by side: one continuous animated image.

  • One continuous image instead of three crops
  • The same file is both wallpaper and screen saver
  • One profile per desktop, picking up where it left off
Download See the difference

Free, tip if you like. Signed and notarised by Apple · no account · no telemetry

Your displays stop being three windows.

They become one surface again — and something is happening on it.

The difference, in one click

What macOS does, and what MyDynScreen does.

After. One continuous view, cut at the real bounds of each display. The bezels cut through it — they don't repeat it.

Change the scene
The app

What it does, plainly.

Six things, not one more. The app views are real screenshots, taken on a Mac that runs it.

Genuinely animated.

Not a slideshow: the video plays behind your icons, decoded in hardware, one pass shared across every display.

Cut to the real geometry

One tile per display, computed from the frames and scale factors the system actually reports.

Retina and non-Retina, mixed

Grade it by eye

Mood, contrast, warmth: you adjust by looking at the picture, never by typing a number.

Live preview
Real screenshot

One profile per desktop

Each keeps its own. It comes alive when you arrive, and stops when you leave.

The "Which desktop?" screen of MyDynScreen: seven desktops, each carrying its own animated wallpaper, spread across two displays.

Wallpaper and screen saver, one file.

No colour seam when it kicks in, no manual setting to fiddle with.

Real screenshot

Profiles you can export

One file holds everything, and applies as-is on another Mac — even without the original video.

The "Your profiles" screen of MyDynScreen: fourteen saved profiles, each with its thumbnail and the desktop it is set on.

And when you come back, it's still there.

You lock the screen, you go for lunch, you return. The scene didn't start over: it kept going without you. That's the detail no screenshot can show.

1image, however many displays you have
1file for both wallpaper and screen saver
0pieces of data sent, ever, to anyone
€0and that's how it stays

What the app doesn't do

  • No telemetry. The app counts nothing and sends nothing: its only network call is the update check, and you can switch it off. This site, on the other hand, measures its audience — only with your consent.
  • No account. You download it, you open it, you use it.
  • Nothing is broken without a way back. Every system setting it takes is saved first, and handed back exactly as it was.
  • No obligation to pay. The app is free. If it earns its place, you can leave a tip.
Getting started

A video goes in. A living desktop comes out.

Download for macOS Frequently asked questions
Support