Storage Buddy is a free Mac disk space analyzer and cleaner. It draws your storage as a picture of your own Mac, explains System Data, and shows folders as blocks you can click into. Smart Cleanup gathers caches, old downloads, duplicates, old iPhone backups, idle node_modules, Xcode simulators, and Docker data, sorted into Safe, Review, and Caution. Nothing is deleted until you review it; everything goes to the Trash first, and History can put it back. No account, and nothing leaves your Mac.