Privacy & safety · Keeping your files safe
When Storage Studio uninstalls an app, could it remove files that belong to something else?
Short answer: The confirmation lists every item it will remove — the app plus its preferences, caches and support files — before anything happens, and everything goes to the Trash so it can be put back.
You see exactly what will go before it happens. The confirmation lists every item — the app plus its leftover preferences, caches and support files — and how much it frees. Everything goes to the Trash, so a mistake can be undone by dragging it back.
The app is quit first, any problem is shown right there rather than failing silently, and apps owned by macOS can't be removed this way. See Apps.