Apps · Moving apps to your fast drive
Can I just drag an app to my external drive instead?
Short answer: Dragging only copies the app, and deleting the original makes the Dock and updaters lose track of it. Storage Studio verifies the copy, leaves a shortcut, and can undo it.
You can, but dragging only copies it — the original stays on your Mac, and if you delete it, the Dock, Launchpad and updaters lose track of the app. Many apps also expect to live in the Applications folder.
Storage Studio's Move checks the app first, verifies the copy, leaves a shortcut at the original place so everything keeps finding it, watches for updaters that reinstall it, and can put it back with one click.