A desktop Mac app is justified when the work needs the machine itself: processing large local files, running while offline, integrating with other desktop software, sitting in the menu bar for quick access, or handling data that should never leave the computer. Creative, engineering and professional tools tend to fall here. For most business software, a web application is the better answer — nothing to install, updates reach everyone at once, and it works on whatever the person happens to be using, which increasingly includes a phone. It is also worth being clear that a Mac app means supporting macOS specifically; if some of your team is on Windows, you are either building twice or choosing the web. We will ask what your staff actually use before recommending either.