What We Collect
DiskCT requires no account and does not collect names, email addresses, contacts, location, browsing history, advertising identifiers, or other personal data. The app contains no advertising or third-party analytics SDK and does not track you across apps or websites.
What DiskCT Accesses
DiskCT accesses a location only after you explicitly select or drop in a folder. It reads file-system metadata—such as names, paths, types, sizes, timestamps, and file-system status—to calculate and display disk space distribution.
DiskCT does not read file contents for analysis. For cloud-only placeholders, the app attempts to avoid materializing content and marks their status. Locations unavailable because of macOS permissions are shown as scan blind spots.
Permissions and App Sandbox
The Mac App Store build runs in App Sandbox, does not request Full Disk Access, and accesses only locations you explicitly authorize through the system panel or drag and drop. Security-scoped bookmarks for authorized recent locations may be stored locally so the app can access them again.
Data Stored Locally
The following information stays on your Mac:
- The current scan-result index at ~/Library/Application Support/DiskCT/index.sqlite
- Security-scoped bookmarks for recent locations you authorized
- Preferences such as language, scan mode, and size units
A new scan replaces the previous current result. You can inspect or clear the scan cache and recent locations under Settings > Data, or remove the app and its container data through macOS.
Export
DiskCT creates a JSON or CSV export only when you request it and confirm a destination in the system save panel. An export may contain file paths and metadata from the scan scope. You control that file; DiskCT does not upload it.
Network and Third-Party Services
DiskCT currently collects no data, performs no tracking, and does not send scan results to a server. The app has no account system, advertising, analytics SDK, subscription, or in-app purchases.
Apple may process App Store downloads and aggregated diagnostics under its own policies. Apple controls that processing; DiskCT does not receive path-level scan data from it.
Children's Privacy
DiskCT is a general-purpose utility and does not knowingly collect personal information from children; the app itself collects no personal data.
Policy Updates
If DiskCT's data practices change, we will update this page and its effective date and update the App Store privacy information.
Contact Us
If you have questions about this policy or how DiskCT handles data, contact us through the DiskCT product page.