macOS 10.13.4 now warns you when you open a 32-bit app
As of June 1st 2018, the Mac App Store will require all apps to support 64-bit, in advance of this after you update to macOS 10.13.4 the first time you open a 32-bit app you will see the following alert. If you press the “Learn More” Button it takes you to the apple.com website which explains. “Starting with macOS High Sierra 10.13.4, apps that have not been updated to use 64-bit processes produce a one-time alert when opened. This gives users advance notice that they are running 32-bit software, which...