Apple’s Developer site on December 1st had shared a reminder that starting January 1st, 2018 32-bit Mac apps will no longer be accepted. After iOS 11 no longer accepts 32-bit applications, today’s Mac will also start to abandon 32-bit applications.

Apple emphasized in the statement: Starting January 1, all new apps submitted to the Mac App Store must support 64-bit architecture, while existing apps must be updated to 64-bit by June 2018. Apple recommends that if you distribute your app outside of the App Store you should update your app to run 64-bit as well. This is due to the fact that macOS High Sierra will be the last macOS release to support 32-bit architecture.

The macOS High Sierra will be the last operating system to support 32-bit apps. Apple has also suggested to developers that they would need to update their existing 32-bit apps to 64-bit before June 2018. The apps to be submitted after January 2018 should also be 64-bit ones.

Obviously, Apple is taking the “mandatory” approach of cleaning up 32-bit applications just like things happened in iOS 11. According to the relevant statistics company, 1.9 million 32-bit apps on iOS 11 had been eliminated by Apple, including 40 thousand games and in the rest of which are mostly education, entertainment and life apps. For Apple, whether it’s iOS or macOS, to use 64-bit apps, meaning to make the device run faster and more smoothly, if you don’t obey, you will be uprooted!

Apple also advised developers, on the other hand, if not through the Mac app store, developers launch applications, but also had better to use 64 – bit architecture, because after that, macOS High Sierra will be the last support 32-bit applications of the operating system.

Apple also shared its support site for distributing Mac apps:

As a reminder, new apps submitted to the Mac App Store must support 64-bit starting January 2018, and Mac app updates and existing apps must support 64-bit starting June 2018. If you distribute your apps outside the Mac App Store, we highly recommend distributing 64-bit binaries to make sure your users can continue to run your apps on future versions of macOS. The last macOS release to support 32-bit apps without compromise is macOS High Sierra.