How to see if your apps are 32-bit or 64-bit
(One will display every 30 days when you open the app.) Otherwise, you’ll have to do a little digging to see if your favorite apps make the cut. If you use macOS Mojave and have been using any apps that won’t be supported by the new OS, you may have seen a pop-up alert from Apple saying that the app isn’t optimized for future versions. MacOS Catalina review: transition period Apple confirms macOS Catalina update is a big problem for DJs who relied on iTunes
