Head to head
| Delve | GrandPerspective | |
|---|---|---|
| Visualization | Mixed | Treemap |
| Platform | macOS | macOS |
| Pricing | Paid Paid one-time purchase (around $5 at time of writing) | Open source Free and open source (GPL); small App Store fee for the packaged build |
| Open source | No | Yes |
| Native Mac | Yes | Yes |
Updated September 2026 · Prices change — please verify with the vendor.
Delve
An honest APFS-aware treemap plus sunburst with collector cleanup.
＋ Delve: Strengths
- Both treemap and sunburst views with APFS-aware measurement
- Collector tray stages deletions before they happen
- Honest marketing about what can and can't be reclaimed
－ Delve: Weaknesses
- Newer entrant — fewer reviews and community resources
- macOS only, no Windows or mobile companion
- Smaller feature surface than all-in-one suites
Read the review: Delve → · Delve See alternatives →
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 →
Verdict: Delve vs GrandPerspective
Choose Delve if you want mixed visualization on macOS. Choose GrandPerspective if you prefer treemap views for free on macOS. 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, Delve or GrandPerspective?
Delve wins on mixed visualization for macOS; GrandPerspective wins on treemap views for macOS. On price, Paid (Delve) vs Open source (GrandPerspective). 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 Delve or GrandPerspective wins on price.