DiskMapper
Download · Beta

Download DiskMapper.

Free, private, and ready in a couple of minutes. This is a public beta — the core is stable and in active use, development is ongoing, and reports of anything odd are genuinely welcome.

Version 0.9.0 (beta) · macOS 26 Tahoe or later · Apple silicon · Signed & notarized Download for Mac (DMG)

Known issue: folder sizes may slightly overstate usage for duplicated (APFS-cloned) or hard-linked files — a fix is scheduled for the next release.

Install: open the DMG, drag DiskMapper to Applications, open it. Signed by the developer and notarized by Apple — no extra steps.

DiskMapper asks for Full Disk Access on first launch so it can see and manage files across your whole Mac — onboarding walks you through granting it, and it's the only permission the app needs.

Built by one indie developer in Canada who reads every email. Questions? [email protected].

DiskMapper is free — if you'd like to support development, buy me a coffee ☕.