
See where your Mac's space went, System Data included
macOS tells you "System Data: 106 GB" and nothing else. Diskzy maps your whole disk, breaks System Data into named parts, and marks what's safe to clear. It cleans up with a reason for every choice and uninstalls apps with everything they left behind. Everything goes to the Trash. Native Swift, about 3 MB, no analytics in the app. Free for 72 hours, then $9 once for 2 Macs.
Diskzy is a macOS tool that visualizes disk usage, breaking down "System Data" into identifiable components and indicating safe cleanup options. It offers a 72-hour free trial, after which it costs $9 for use on two Macs.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.