What you measure stays on your Mac.

Diskist is a Mac app that measures a disk or a folder and draws where the space went. This page says what it reads, what it keeps and what leaves your Mac. It is short, because the app sends nothing.

Last updated November 13, 2026

What leaves the Mac

Nothing. Diskist runs in the App Sandbox without network access, so it cannot send what it measures anywhere. It has no analytics, no crash reporting and no account. Updates come through the Mac App Store, under Apple's terms.

What it reads

Diskist reads only the disks and folders you choose in the Open panel. macOS hands the app each one you choose, and Diskist keeps that choice as a bookmark on your Mac so it does not ask again. Its Access settings list every place you allowed, with a Remove button beside each.

macOS keeps some folders private: Mail, Messages, Safari and other apps' data. Diskist counts them as hidden space and does not open them. If you give Diskist Full Disk Access in System Settings, a scan can measure them too. A scan does not download cloud files to measure them.

What it keeps

Your settings, the places you allowed, and the Cleanup Log: a list of your scans and of the items you removed, with their paths and sizes. They are files on your Mac, in Diskist's own container. Clear Log in the Cleanup Log empties it.

The app also keeps a short diagnostic record of what it did, with counts, sizes and timings. It holds no file names and no paths, and it stays on your Mac.

What it removes

Only what you put in the Collector, and only after you press its button. Items go to the Trash unless you choose to delete at once in Settings.

The email list

If you leave an address on the home page, Netlify, which hosts this site, stores it with the form. We use it to write when Diskist is on the Mac App Store, and for nothing else. Write to support@diskist.com to have it deleted.

This site

This site has no analytics and sets no tracking cookies.Its typefaces come from Google Fonts.That is its one outside request.

Contact

Diskist is made by High5 Labs LLC, 4030 Wake Forest Road, Ste 349, Raleigh, NC 27609. Questions about privacy go to support@diskist.com.