“Yes” indicates 64-bit “No” indicates 32-bit. When you select an individual application, you will see a field titled 64-bit (Intel). From the system report, scroll down to Software in the sidebar, then select Applications. To check if an app is 32-bit or 64-bit, from the Apple menu, choose About This Mac, then click the System Report button. Thankfully, it’s easy to tell if an app is 32-bit or 64-bit.Īs developers optimize their apps for 64-bit compatibility, Apple is notifying customers when they’re using an app based on 32-bit technology via a one-time alert that appears when you launch a 32-bit app. In macOS Mojave, this alert appears once every 30 days when launching the app. This means that means some older apps that haven’t been updated in awhile will cease to work. Beginning June 1, 2018, all new app updates submitted to the Mac App Store had to support 64-bit. Apple is expected to phase out support for 32-bit apps in macOS 10.15, which will almost certainly be previewed at the 2019 Worldwide Developer Conference in June.
