: If you already have iMovie, check the Updates tab in the App Store.
Because the App Store typically only offers the latest version (currently 10.4.x), downloading 10.3.3 requires specific methods: Method 1: The "Purchased" Tab (Safest) If you have ever owned iMovie on your Apple ID: Open the on your Mac. Click your Name/Profile in the bottom left corner. Find iMovie in your list of purchased apps. Click the Cloud Download icon. Imovie 10.3.3 Download