The first time you open the Mac App Store in the latest version of macOS, it checks for the following apps on your Mac. If it finds any of these versions, you can upgrade to later versions as a software update from the Mac App Store.
- iMovie '11
- Pages '09
- Numbers '09
- Keynote '09
- Apple Remote Desktop 3.x
If the Updates pane of the Mac App Store doesn't show later versions of these apps:
- Make sure that you're signed in to the Mac App Store: choose Store > Sign In.
- Install any other updates that appear in the Updates pane, including macOS updates. Then check the Updates pane again.
- Choose Apple menu > System Preferences, then click Spotlight. In the Privacy tab, make sure that your startup disk and Applications folder are not in the list of items that Spotlight is prevented from searching.
If you have an even earlier version of any of these apps, you can purchase an upgrade from the Mac App Store.