If you've upgraded to macOS Mojave or later, follow these steps to keep it up to date:
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To find updates for iMovie, Garageband, Pages, Numbers, Keynote, and other apps that were downloaded separately from the App Store, open the App Store on your Mac, then click the Updates tab.
To automatically install macOS updates in the future, including apps that were downloaded separately from the App Store, select ”Automatically keep my Mac up to date.” Your Mac will notify you when updates require it to restart, so you can always choose to install those later.
If you're using an earlier macOS, such as macOS High Sierra, Sierra, El Capitan, or earlier,* follow these steps to keep it up to date:
To automatically download updates in the future, choose Apple menu > System Preferences, click App Store, then select ”Download newly available updates in the background.” Your Mac will notify you when updates are ready to install.
The app integrates with iCloud which helps user to organize files in a more effective way. One of the best thing about this update was that users can seamlessly send and receive attachments up to 5 GB in size via iCloud, that is much more than the average limit. Apple brought improvements to a number of core OS X apps in Yosemite, which made the application interface better. Yosemite received positive reviews, with users praising the simplified user interface. Yosemite was mainly praised for its design but there were some WiFi connectivity issues and the continuity was not reliable.Another notable bug experienced on Yosemite was the ‘unicode of death’ problem, that is, using a meaningless Arabic word the application could crash.
* If you're using OS X Lion or Snow Leopard, get OS X updates by choosing Apple menu > Software Update.
Learn how to update your iPhone, iPad, or iPod touch to the latest version of iOS.