Which macOS Supports 32 Bit: List

Which macOS supports 32-bit?

If you’re curious about which macOS supports 32-bit applications, it’s macOS Mojave version 10.14 and earlier.

After Mojave, Apple transitioned exclusively to support 64-bit applications.

In this blog post, we will delve into the details of macOS versions, the implications of using 32-bit software, and what the transition to 64-bit means for users.

Understanding 32-bit and 64-bit Applications

Before jumping into macOS specifics, let’s first understand what 32-bit and 64-bit applications are.

Applications are designed based on the architecture of the processor.

A 32-bit application is suited for a 32-bit processor and uses a specific range of memory.

A 64-bit application, on the other hand, is designed for 64-bit processors and can handle more memory and might perform better in some environments.

The Evolution of Apple’s macOS

Apple’s macOS has gone through numerous iterations over the years.

Early versions of macOS were built to support 32-bit applications.

However, as technology and hardware advanced, Apple moved towards optimizing for 64-bit architecture.

This move allows better performance, enhanced security, and the ability to work with more extensive memory.

macOS Mojave (10.14)

macOS Mojave was the last version to support 32-bit applications.

Released in 2018, Mojave provided users with an early warning that this would be the final macOS to run 32-bit software.

If you’re running Mojave and have older applications you rely on, you can still use them without issue.

However, it’s essential to understand that newer macOS versions will not support these applications.

Features of macOS Mojave

macOS Mojave introduced several new features.

These include Dark Mode, which alters the appearance of the OS interface to be darker, improving visual comfort.

It also brought Dynamic Desktop, which changes the desktop picture throughout the day.

Other features include the Stacks feature for desktop organization and several improvements in terms of system performance and security.

The Transition Period

When Apple announced the end of 32-bit support, it gave developers a grace period to transition their applications.

Developers were encouraged to update their software to 64-bit to ensure compatibility with future macOS versions.

Users were also notified through warnings when launching 32-bit applications, indicating these apps would not be supported in future macOS versions.

macOS Catalina (10.15) and Beyond

With the release of macOS Catalina in 2019, Apple officially dropped support for 32-bit applications.

Users who upgraded to Catalina or later versions quickly discovered that older 32-bit apps would no longer run.

This change was a significant shift in the Mac ecosystem but provided better performance and security for users.

Features of macOS Catalina

Catalina introduced several new features alongside its 64-bit architecture focus.

One of the most notable was the retirement of iTunes, which was split into three distinct applications: Music, Podcasts, and TV.

Sidecar was another new feature, allowing users to extend their Mac’s display to an iPad.

Catalyst was introduced, enabling developers to port iPad apps to macOS easily.

The new Voice Control feature brought enhanced accessibility options, and the Find My app combined Find My iPhone and Find My Friends.

Why Move to 64-bit?

You might wonder why Apple decided to move exclusively to 64-bit applications.

There are several reasons for this shift.

One of the main advantages of 64-bit architecture is its ability to handle more RAM.

This allows the system to run more demanding applications and multiple applications simultaneously without slowing down.

Security and Performance Improvements

Security is another critical factor.

64-bit applications benefit from more robust security measures, making it more challenging for malicious software to exploit vulnerabilities.

Moreover, 64-bit processors can handle intensive processes more efficiently, leading to overall better performance.

What This Means for Users

For users relying on older 32-bit applications, the transition can be challenging.

If you have important software that hasn’t been updated to 64-bit, you might find it difficult to continue using it on newer versions of macOS.

However, there are a few potential solutions.

Running a Virtual Machine

One way to continue using 32-bit applications is to run a virtual machine with an older version of macOS.

This method allows you to keep using your essential software while taking advantage of the latest macOS updates on your primary system.

Virtualization software enables you to run another operating system within your current one.

Alternatives and Updates

Another approach is to look for alternative software that serves the same purpose but has been updated to 64-bit.

In many cases, developers have already updated their applications, or there may be newer, more modern software available.

It’s worth reaching out to the software developers to see if they plan updates or if they can recommend alternatives.

Preparing for The Future

As technology continues to advance, staying updated with the latest software is crucial for security and performance.

While the transition from 32-bit to 64-bit applications can be inconvenient initially, it ultimately leads to a more robust, secure, and efficient computing experience.

Users should regularly check for software updates and consider moving to newer applications to keep up with modern standards.


In conclusion, macOS Mojave 10.14 is the last version of macOS that supports 32-bit applications.

Since the release of macOS Catalina 10.15, Apple has transitioned entirely to 64-bit software.

This shift brings several benefits to performance and security but requires users to update or find alternatives to their older 32-bit applications.

As technology evolves, embracing these changes ensures a more efficient and secure user experience.