What GrandPerspective is
GrandPerspective by Erwin Bonsma is a treemap disk analyzer for macOS. Pricing is open source (Free and open source (GPL); small App Store fee for the packaged build). The official site is linked below — always download disk tools from the vendor, never from aggregators.
| GrandPerspective | |
|---|---|
| Vendor | Erwin Bonsma |
| Platform | macOS |
| Pricing | Open source — Free and open source (GPL); small App Store fee for the packaged build |
| Visualization | Treemap |
| Open source | Yes |
Stand september 2026 · Prijzen veranderen — controleer bij de aanbieder.
Official GrandPerspective site ↗
Sterke punten & Zwaktes
＋ Sterke punten
- 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
－ Zwaktes
- 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
Who GrandPerspective is for
Tinkerers, privacy purists, and anyone who wants an auditable tool. Fans of treemap visualization on macOS. If instead you want a native Mac sunburst with a staged, Trash-based cleanup and zero telemetry, that's NullDisk's whole pitch.
The NullDisk alternative
- A radial sunburst map instead of lists or treemaps — see usage at a glance and drill in with a click.
- A staged removal collector: queue suspects, review, then Trash everything together.
- Allocated-size measurement with hard-link dedup, so reclaimed space matches reality.
GrandPerspective vs NullDisk → · Bekijk alternatieven → · Overstapgids →
Veelgestelde vragen
Is GrandPerspective worth it?
GrandPerspective is worth a look if you like treemap views and open source pricing on macOS. The tiny open-source treemap that shows your biggest files instantly. For a native Mac map with a staged cleanup workflow, compare it against NullDisk before deciding.
Is GrandPerspective safe?
GrandPerspective is as safe as its workflow: it visualizes usage and deletes on your command. Whatever you choose, prefer tools that stage deletions or use the Trash — which is exactly how NullDisk's collector works.
Does GrandPerspective work on Apple Silicon?
Yes — GrandPerspective runs on modern Macs, including Apple Silicon. If nativeness matters to you, NullDisk is built SwiftUI-first for macOS 14 and up.
Kortom
GrandPerspective: free and open source with a tiny footprint — but treemap UI is utilitarian — no sunburst, no guided cleanup. Weigh that trade honestly against NullDisk's native map, staged collector, and zero-data promise.
Overweeg ook
- Disk Inventory X — The classic treemap visualizer, revived for Apple Silicon Macs. (Disk Inventory X vs GrandPerspective →)
- Klarity Disk — A private offline analyzer with treemaps and system monitoring. (Klarity Disk vs GrandPerspective →)
- DissectMac — A fast local treemap with uninstaller and live monitoring. (DissectMac vs GrandPerspective →)