Disk Diet5.6.3

Disk Diet scans a Mac’s drive and identifies removable clutter, helping recover gigabytes of space in under a minute. It focuses on application logs, system logs, caches, and the Trash, then lets you review what can be cleaned before removing it.

A space bar at the top shows drive statistics, including the amount of used space classified as junk and the portion that can be safely freed. The app can automatically select applications unused for one month, one year, or two years, while also allowing individual applications to be chosen from a list.

Disk Diet explains each cleanup area through help popovers, and its interface is available in English, French, German, Italian, Spanish, Russian, Japanese, and Simplified Chinese. It uses macOS Grand Central Dispatch to run work across every CPU core; on a modern SSD, scanning and deciding what to remove typically takes about 10–20 seconds, with drive speed being the main limitation.

Version 5.6.3 is freeware for macOS 11.5 or later and runs natively on both Intel and Apple Silicon Macs as a Universal Binary. It is optimized for macOS 26 Tahoe, supports light and dark appearances, and is Apple-notarized with Hardened Runtime protection on macOS 10.15 Catalina and later; the App Store edition is sandboxed. In-app prompts guide setup without requiring an extensive tutorial, making it useful when forgotten files or long-unused applications are consuming space.