With iOS 11, Apple phased out support for 32-bit iOS apps, and it had announced that macOS High Sierra 10.13 will be the last release to support 32-bit apps.
So looks like it has started preparing Mac users about the lack of support for 32-bit apps as in macOS High Sierra 10.13.4 Apple has started showing an alert the first time you launch informing users that the “app is not optimized for your Mac”.
It means that you have to either hope that developers will release 64-bit versions of their apps or you will have to find an alternative 64-bit app that offers similar or better features.
How to Check for 32-bit Mac Apps
If you want to find out if your favorite Mac app is 32-bit or 64-bit, follow these steps:
STEP 1: From the Apple menu, choose About This Mac.
STEP 2: Then click the System Report button.
STEP 3: From the system report, scroll down to Software, then select Applications.
STEP 4: When you select an app, you will see a field titled ”64-bit (Intel)”. “Yes” indicates 64-bit; “No” indicates 32-bit.
If your favorite app is 32-bit then you may want to check if the developer has released a new version of the app that is 64-bit. If the 64-bit version is not available, then contact the developer to check if they plan to release the 64-bit version soon. You can find the name of the developer of an app, by launching the app, then clicking the app name in the menu bar and selecting ”About….”, so you can search for them on Google to contact them.
If Apple does drop support for 32-bit apps in macOS 10.4, then you don’t need to worry it as there is still quite a lot of time left as it would only be released in September or October. So you have enough time to check for updates or switch to an alternative app that offers similar or better features as your favorite app.
Let us know if you found any 32-bit apps on your Mac.