Apple has released a new macOS High Sierra release that supports 32-bit apps “without compromise,” and beta versions of macOS 10.13.4 now let users know if 32-bit apps are running. This could indicate that 32-bit Mac apps will go through a compatibility mode such as Rosetta or Classic in the near future, and eventually it seems likely that Apple will completely drop support for 32-bit apps on the Mac in a future system software release.
There are a number of apps that are widely used on many Macs despite the Mac OS itself being 64-bit. If you’re not sure which apps are 32-bit or 64-bit, then you can use System Information to quickly show you all apps that are or are not.
How to Search and view all 32-bit apps on a Mac
To see all 32-bit applications on a Mac, use System Information.
Many Mac users have 32-bit apps installed and used regularly, including Steam, SuperDuper, TextWrangler, Warcraft 3, and WriteRoom. This is just an example, of course. ..
An app that says “No” is 32-bit, an app that says “Yes” is 64-bit.
If you’re running 32-bit apps on a Mac that’s set to receive future macOS updates, you’ll want to update them to 64-bit in order to take advantage of the newer features and security protections. If the app developers don’t provide support for 64-bit apps, you can find replacements from third-party developers. However, it’s likely that 32-bit apps will still be around for a while on macOS, so there may be some compromise involved. ..
How will this affect me? Why do I care which apps are 32-bit or 64-bit?
This affects you currently, but it could affect future versions of the Mac OS software.
If you don’t plan on ever running a Mac OS outside of macOS High Sierra, it will never affect you. For example, if you’re avoiding a theoretical release of macOS 10.14, 10.15, or 10.16, it probably doesn’t matter at all. But if you install a future macOS system software version with some sort of abstraction layer to run 32-bit apps, the performance may not be optimal. And furthermore, if a MacOS release loses all 32-bit app compatibility, those apps might not work at all, without 64-bit updates from the developer.
Apple has been discontinuing 32-bit app support on some iPhone and iPad devices for some time now, and in the past they have done the same with Rosetta for PPC apps on Intel chips. This is likely due to the fact that many classic apps are not as well supported in 32-bit mode as they are in 64-bit mode, and it makes sense to move away from a platform that is not as well supported.
OK, but I can’t find “System Information” on my Mac!
If you don’t see “System Information” in the Apple drop-down menu, you probably didn’t press the Option key while viewing the Apple menu options. Hold down Option and try again. Or try an alternate method to launch the System Information app.
You can access System Information from the /Applications/Utilities/folder or by launching it from Spotlight. ..
Does this also mean that Macs and MacOS will also be 64-bit?
Apple has been supporting 32-bit apps and architecture on its Macs for a decade now, but it looks like the company is planning to switch to 64-bit soon. ..
Apple’s macOS High Sierra is a major release that may not include full support for older 32-bit apps, so be sure to update any that you rely on. If you can’t update your app, or if it’s not supported by macOS High Sierra, avoid upgrading to the software.
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