Roomy maps everything taking up space on your Mac and shows what's safe to remove. Then Autopilot keeps it tidy on its own: every day it clears caches of apps you're not using, old installers, forgotten Trash and bloated developer caches, and it steps in when your disk is almost full. It never touches your photos or documents. Not sure what a folder is? Right-click it and ask "What is this?". Free to try, $6.99 once for Pro. No subscription.