TidyMacDefinition
A read-only, point-in-time copy of a volume kept on the same disk.
Time Machine creates one roughly every hour on your Mac’s own drive. They share unchanged data with your files, so they start small and grow as files change. How to thin them
Let TidyMac do this for you
Scan free, see every part of your storage explained, and clean only what’s safe. Everything goes to the Trash first.