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.
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Faccia a faccia: NullDisk vs LumaDisk
| NullDisk | LumaDisk | |
|---|---|---|
| Visualization | Sunburst radial map | Sunburst |
| Platform | macOS 14+ | macOS + Windows |
| Pricing | Paid | Paid |
| Open source | No (offline, zero-data) | No |
| Cleanup flow | Staged collector → Trash | Varies by tool |
L'essenziale: LumaDisk
| LumaDisk | |
|---|---|
| Vendor | MbApps |
| Platform | macOS + Windows |
| Pricing | Paid — Paid one-time purchase (around $7 at time of writing) |
| Visualization | Sunburst |
| Open source | No |
Aggiornato a settembre 2026 · I prezzi cambiano — verifica presso il fornitore. Prezzo al lancio: Paid one-time purchase (around $7 at time of writing).
NullDisk fa per te se …
- Truly native: Swift and SwiftUI on macOS, not a cross-platform toolkit.
- Honest one-time purchase instead of subscriptions or gated tiers.
- Fully offline with a published zero-data policy — nothing ever leaves your Mac.
Pros & cons
＋ Punti di forza
- Modern sunburst visualization on both Mac and Windows
- Fast scans with a clean, contemporary interface
- Affordable one-time price
－ Debolezze
- Cross-platform toolkit feel rather than fully native Mac UI
- Newer app with a shorter track record than incumbents
- Cleanup tooling is lighter than specialist cleaners
Domande frequenti
What is the best alternative to LumaDisk for Mac?
For most Mac users it's NullDisk: native SwiftUI, a radial sunburst map, a staged removal collector, and zero data collection. LumaDisk users who want sunburst views and paid pricing will feel at home within minutes.
Is there a free alternative to LumaDisk?
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.
How do I switch from LumaDisk to NullDisk?
Note the largest folders LumaDisk flagged, then run the same scan in NullDisk and rebuild the cleanup in its removal collector. The full walkthrough is on our switching guide.
In breve
LumaDisk is a capable tool for sunburst fans on macOS + Windows. But if you want the whole job — see, stage, and safely remove — done natively on a modern Mac, NullDisk is the upgrade. Guida al passaggio →