Head to head
| GrandPerspective | LumaDisk | |
|---|---|---|
| Visualization | Treemap | Sunburst |
| Platform | macOS | macOS + Windows |
| Pricing | Open source Free and open source (GPL); small App Store fee for the packaged build | Paid Paid one-time purchase (around $7 at time of writing) |
| Open source | Yes | No |
| Native Mac | Yes | No |
Updated September 2026 · Prices change — please verify with the vendor.
GrandPerspective
The tiny open-source treemap that shows your biggest files instantly.
＋ GrandPerspective: Strengths
- Free and open source with a tiny footprint
- Treemap rectangles make the single biggest space hog obvious
- Fast rescans and a loyal power-user community
－ GrandPerspective: Weaknesses
- Treemap UI is utilitarian — no sunburst, no guided cleanup
- No collector tray or duplicate finder; deletion is file-by-file
- Development pace is slow compared with commercial rivals
Read the review: GrandPerspective → · GrandPerspective See alternatives →
LumaDisk
A light-speed sunburst that turns your filesystem into light.
＋ LumaDisk: Strengths
- Modern sunburst visualization on both Mac and Windows
- Fast scans with a clean, contemporary interface
- Affordable one-time price
－ LumaDisk: Weaknesses
- 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
Read the review: LumaDisk → · LumaDisk See alternatives →
Verdict: GrandPerspective vs LumaDisk
Choose GrandPerspective if you want treemap visualization with open-source transparency on macOS. Choose LumaDisk if you prefer sunburst views at paid pricing on macOS + Windows. And if you want a native Mac sunburst with a staged collector and zero telemetry, NullDisk is the third option that beats both on workflow.
Frequently asked questions
Which is better, GrandPerspective or LumaDisk?
GrandPerspective wins on treemap visualization for macOS; LumaDisk wins on sunburst views for macOS + Windows. On price, Open source (GrandPerspective) vs Paid (LumaDisk). The honest answer depends on your OS and whether you prefer maps or lists — read the verdict below.
Is there something better than both?
If you want a native Mac sunburst with allocated-size honesty, a staged removal collector, and zero data collection, NullDisk beats both on workflow — even where GrandPerspective or LumaDisk wins on price.