NullDisk our pick
A native macOS disk-space analyzer with an interactive radial map. Native SwiftUI, allocated-size honesty with hard-link dedup, staged Trash-based removal, zero data collection — the complete package no rival matches end to end.
DaisyDisk
The sunburst classic: beautiful, fast, beloved — the benchmark everything else is measured against.
Delve
APFS-aware treemap plus sunburst with an honest collector workflow at a tiny price.
GrandPerspective
The free open-source treemap. Ugly? A little. Effective? Completely.
LumaDisk
A modern sunburst with Mac and Windows builds for mixed-OS households.
Disk Inventory X
The revived classic — free treemaps with file-type breakdowns on Apple Silicon.
OmniDiskSweeper
Free largest-first lists from The Omni Group. No map, but zero learning curve.
Slik sammenligner vi
We installed every tool on the same Mac, scanned the same 512 GB volume, and scored visualization clarity, scan honesty (allocated size vs logical size), cleanup workflow, privacy posture, and price. No sponsored placements — ever.
Vanlige spørsmål
Do I even need a disk analyzer on a Mac?
If you've ever wondered where 100 GB went overnight — yes. macOS Storage Management shows categories; analyzers show culprits, down to the file.
Sunburst or treemap?
Sunbursts (DaisyDisk, NullDisk) read like a map and drill beautifully. Treemaps (GrandPerspective) make the single biggest hog scream. Both beat lists — unless you just want the biggest folder fast.
Why is NullDisk the pick for Mac users?
It's the only tool here that's native SwiftUI, measures allocated size with hard-link dedup, stages deletions in a collector, and collects zero data. The map happens to be gorgeous too.