Sometime, probably quite soon, your Mac will stop running 32-bit apps. All new Macs have 64-bit processors, and Apple wants to phase out older 32-bit apps in order to “enable faster system performance” for your Mac as a whole. What this means is that, in an as-yet-unspecified future version on macOS, 32-bit apps will stop running altogether.
If you’re running macOS High Sierra 10.13.4, then you may already have seen a warning pop up onto the screen when you launch older apps. Today we’ll see how to view a list of all the 32-bit apps on your Mac, so you can either harass the developer to update them, look for a better-supported alternative, or just delete them.