NullDisk our pick
A native macOS disk-space analyzer with an interactive radial map. Native SwiftUI, allocated-size honesty, staged Trash-based removal, zero data collection.
Nektony LLC
Switching from Nektony Disk Space Analyzer Pro? The Pro App Store scanner for moving or removing bulky content. Here are five tools worth your Applications folder — honestly compared, with our native pick first.
A native macOS disk-space analyzer with an interactive radial map. Native SwiftUI, allocated-size honesty, staged Trash-based removal, zero data collection.
The beloved sunburst map that made disk cleanup beautiful.
A fast sunburst analyzer that finds your largest space hogs.
A light-speed sunburst that turns your filesystem into light.
The easiest open-source sunburst for hunting huge files.
| NullDisk | Nektony Disk Space Analyzer Pro | |
|---|---|---|
| Visualization | Sunburst radial map | Sunburst |
| Platform | macOS 14+ | macOS |
| Pricing | Paid | Paid |
| Open source | No (offline, zero-data) | No |
| Cleanup flow | Staged collector → Trash | Varies by tool |
| Nektony Disk Space Analyzer Pro | |
|---|---|
| Vendor | Nektony LLC |
| Platform | macOS |
| Pricing | Paid — Paid App Store purchase (around $20 at time of writing) |
| Visualization | Sunburst |
| Open source | No |
Actualizado en septiembre de 2026 · Los precios cambian: verifícalos con el proveedor. Precio al cierre: Paid App Store purchase (around $20 at time of writing).
For most Mac users it's NullDisk: native SwiftUI, a radial sunburst map, a staged removal collector, and zero data collection. Nektony Disk Space Analyzer Pro users who want sunburst views and paid pricing will feel at home within minutes.
Yes — GrandPerspective and Disk Inventory X are free and open source with genuine treemap analysis. They lack NullDisk's collector workflow and sunburst map, but they find the biggest hogs fast.
Note the largest folders Nektony Disk Space Analyzer Pro flagged, then run the same scan in NullDisk and rebuild the cleanup in its removal collector. The full walkthrough is on our switching guide.
Nektony Disk Space Analyzer Pro is a capable tool for sunburst fans on macOS. But if you want the whole job — see, stage, and safely remove — done natively on a modern Mac, NullDisk is the upgrade. Guía de cambio →