The writing is on the wall for 32-bit macOS apps: 32-bit iOS apps are no longer supported in iOS 11, and Apple announced at its annual WWDC 2017 conference that, beginning in January 2018, 32-bit apps and updates for macOS will no longer be accepted.

Now Apple is going one step further. When macOS 10.13.4 launches in the Spring, you won't be able to open 32-bit apps without a warning.

The move makes sense: macOS and iOS are getting faster and more powerful, and 32-bit apps can't make use of the processing power and memory that 64-bit apps can. Apple wants the experience on macOS and iOS to be (in its words) 'buttery smooth.' 64-bit apps can help Apple and iOS and macOS developers achieve that goal.

How to check if your macOS apps have been updated to 64-bit

Jan 24, 2018  Here’s an excerpt from the macOS High Sierra 10.13.4 beta changelog: To prepare for a future release of macOS in which 32-bit software will no longer run without compromise, starting in macOS High Sierra 10.13.4 a user is notified on the launch of an app that depends on 32-bit software. Jan 24, 2018 High Sierra Bye 32-bit apps How to check to see if your Mac applications are 32-bit or 64-bit Starting in macOS High Sierra 10.13.4, launching 32-bit apps will display a warning. Here's how to check in advance to see which of your apps is at the end of its macOS shelf life. Imagine how disappointed future you will be to find your 64 bit app can not be reinstalled since it uses a now broken installer. For more details, you can refer to the Apple Support document, 32-bit app compatibility with macOS High Sierra 10.13.4 and later. Starting with macOS Catalina, 32-bit apps are no longer compatible with macOS. 32-bit app compatibility with macOS High Sierra 10.13.4 and later This is to inform you of the action we will take for 32-bit apps provided by Roland. Oct 11, 2019 How to Run 32-Bit Apps in macOS Catalina. Apple's latest version of macOS, Catalina, officially ditches 32-bit app support, but you can still run the software you need by following these steps.

If you wanna check your apps to see which are already ready for the January 2018 transition, it's super simple!

1. Type the following keyboard shortcut Command ⌘ + Space bar to launch Spotlight.
2. Begin to type in System Information and hit Enter when it shows up.
3. Scroll down to the Software section in System Information.
4. Click Applications and wait for your applications to load.
5. The column to the far right in the Applications table will give you a simple, 'Yes' or 'No' answer as to whether or not your app is 64-bit.

Questions?

32-bit? 64-bit? Any of this serving to confuse more than educate? Let us know in the comments section below and we'll try to lend a hand!

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