Mural Engine

What it does

Mural Engine is a dedicated helper that enables dynamic lock screen sync on your Mac. When you initiate a sync from Mural, Engine processes your wallpaper at full quality — with all Lab effects included — and updates your dynamic lock screen to match your desktop. Custom media and weather effects stay in motion there, not just on the desktop.

It only needs to run during the sync. Once the process is complete, you can quit it.

Installation

1. Download and unzip. Move Mural Engine.app to your Applications folder.
2. Open it. If macOS shows a security prompt, right-click the app and choose Open.
3. Mural Engine appears in your menu bar. Open Mural → Dynamic Lock Screen tab and tap Sync — a setup guide will walk you through granting Full Disk Access. Or click the Mural Engine icon in your menu bar and tap Open Settings → to grant access directly.
4. Once sync is complete, you can quit Mural Engine. It does not need to stay running.

Why a separate download?

Dynamic lock screen sync requires Full Disk Access — a macOS permission that lets Mural Engine interact with your dynamic lock screen. Distributing Engine as a separate download keeps everything transparent: you always know exactly what's running on your Mac, and you're in full control of when it runs.