For older software, Apple sometimes hosts installers on their official support site. Go to support.apple.com/downloads/imovie and search for legacy installers. Note that Apple rarely hosts full DMG files for iMovie because it has always been distributed via the App Store. However, if you have a redemption code for iMovie ’11 or ’13, you might find older packages.
If you’ve landed on this page searching for you aren’t just looking for any video editor. You are likely a Mac user seeking a specific, stable version of Apple’s flagship consumer editing software. Perhaps you’re running an older version of macOS that no longer supports the latest iMovie releases, or maybe you prefer the classic interface of 10.2.5 over newer iterations. imovie 10.2.5 dmg download
You might wonder why you are looking for a file specifically rather than just clicking an "Update" button. For older software, Apple sometimes hosts installers on