Go64 is a free piece of software that checks your Mac for 32-bit apps, which won’t work after macOS Mojave. Although you can do this manually with System Report, Go64 goes further. It takes an inventory of the apps on your Mac and see which ones are still 32-bit. Then, it helps you visit the developer’s website or search the web for update/upgrade information. It then keeps track of upgrade costs so you can add 64-bit apps to your budget. It’s made by St. Clair Software, makers of other great Mac apps like App Tamer, Default Folder X, Jettison, and HistoryHound. Best of all, Go64 is completely free. Download: Go64