(it’s free) so it attaches to your account history.

: A pop-up will appear saying the current version is incompatible, but it will offer to "download the last compatible version" for your OS. This will automatically fetch version 10.1.6 for El Capitan users. 2. The "Newer Mac" Workaround

: If you have ever "bought" it before (even for free), it will appear here.

If iMovie isn't in your "Purchased" history, you can't download it on an old Mac. Use this workaround:

: Click your name or the Purchased tab at the top/side.

(running a recent OS like Sonoma or Ventura). Sign in to the App Store with your Apple ID.

and go back to your old Mac. iMovie will now appear in your Purchased tab, allowing you to download the compatible 10.1.6 version. 3. Caution with Third-Party DMG Files