Check Builder Mac Manual

Is your Mac up to date with the latest version of the Mac operating system (macOS or OS X)? Is it using the version required by some product or feature? Which versions are earlier (older) or later (newer, more recent) than the version currently installed? To find out, learn which version is installed now.

If your macOS isn't up to date, you may be able to update to a later version.

Jul 22, 2019  If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps installed by macOS, such as Safari, iTunes, Books, Messages, Mail, Calendar, and Photos. Mac Tools Social Media. Mac Tools Customers are proud to show that Mac Tools are Great to Work With™. So, we are eager to have you connect with us via Facebook, Instagram, and Twitter to share your experiences with the brand, our products, partners, and our entire Mac Tools team. Jan 31, 2018  CheckBuilderPro is easy to use. Everything is laid out in a logical, easy to use fashion - it's simple to build your own checks:. Copy the info from an existing check. Customize as you wish. Make a few small adjustments. Print and you're done!

Which macOS version is installed?

From the Apple menu  in the corner of your screen, choose About This Mac. You'll see the macOS name, such as macOS Mojave, followed by its version number. If some product or feature requires you to know the build number as well, click the version number to see it.

This example shows macOS Mojave version 10.14 build 18A391.

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Which macOS version is the latest?

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These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Mojave. And as updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps installed by macOS, such as Safari, iTunes, Books, Messages, Mail, Calendar, and Photos.

macOSLatest version
macOS Catalina (coming soon)
10.15 Beta
macOS Mojave10.14.6
macOS High Sierra10.13.6
macOS Sierra10.12.6
OS X El Capitan10.11.6
OS X Yosemite10.10.5
OS X Mavericks10.9.5
OS X Mountain Lion10.8.5
OS X Lion10.7.5
Mac OS X Snow Leopard10.6.8
Mac OS X Leopard10.5.8
Mac OS X Tiger10.4.11
Mac OS X Panther10.3.9
Mac OS X Jaguar10.2.8
Mac OS X Puma10.1.5
Mac OS X Cheetah10.0.4

Learn more

Check Builder Pro

  • Always use the macOS that came with your Mac, or a compatible newer version.
  • Learn how to reinstall macOS from macOS Recovery.