Compared with macOS

macOS's Storage settings show what fills your Mac and suggest ways to tidy it. Storage Studio adds moving things to an external drive, safe cache clearing and a recoverable way to remove things. They work well together.

iCloud's Optimise Mac Storage lets macOS decide when to make older iCloud Drive files online-only. Storage Studio lets you do it now, for a folder you choose, and set how long opened files stay downloaded.

Time Machine backs up your whole Mac. Storage Studio's Data Backup keeps versioned backups of the folders you choose, including ones on your external drive. Use both.

Dragging a folder to another drive in Finder copies it. Storage Studio checks the copy before removing the original, can leave a shortcut behind, and keeps a log you can undo from.

macOS can remove items that have been in the Trash for 30 days. Storage Studio never empties your Trash as part of Smart Care, and keeps the things it removes in its own Recycle Vault.

Dragging an app to the Trash removes the app but usually leaves its support files behind. Storage Studio's Uninstall finds those leftovers, shows them, and removes them recoverably.

Finder's Remove Download makes an iCloud Drive item online-only when you ask. Storage Studio's Keep opened files on this Mac does it automatically after a time you choose.

Your own iCloud Drive is built into macOS and needs nothing from Storage Studio. Storage Studio adds other accounts, including another Apple ID's iCloud Drive, to Finder in one place.