Head to head
| Disk Graph | Space Radar | |
|---|---|---|
| Visualization | Mixed | Mixed |
| Platform | macOS + iOS | macOS + Windows + Linux |
| Pricing | Paid Paid one-time purchase (around $6 at time of writing) | Open source Free and open source (MIT) |
| Open source | No | Yes |
| Native Mac | Yes | No |
Updated September 2026 · Prices change — please verify with the vendor.
Disk Graph
Pie-chart and treemap inspector with snapshots and search.
＋ Disk Graph: Strengths
- Multiple views: pie charts, treemaps, and file search
- Snapshots let you compare disk usage over time
- Universal purchase across Mac, iPhone, and Vision Pro
－ Disk Graph: Weaknesses
- Jack-of-views approach means no single standout visualization
- Cleanup workflow is thinner than dedicated cleaners
- Smaller user base means fewer guides and comparisons
Read the review: Disk Graph → · Disk Graph See alternatives →
Space Radar
Sunburst, treemap, and flamegraph views for disk nerds.
＋ Space Radar: Strengths
- Three visualizations including a rare flamegraph view
- Free and MIT-licensed for tinkering
- Web-tech stack runs anywhere
－ Space Radar: Weaknesses
- Experimental project, not a supported product
- No deletion workflow — visualization only
- Requires comfort with GitHub releases and rough edges
Read the review: Space Radar → · Space Radar See alternatives →
Verdict: Disk Graph vs Space Radar
Choose Disk Graph if you want mixed visualization on macOS + iOS. Choose Space Radar if you prefer mixed views for free on macOS + Windows + Linux. 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, Disk Graph or Space Radar?
Disk Graph wins on mixed visualization for macOS + iOS; Space Radar wins on mixed views for macOS + Windows + Linux. On price, Paid (Disk Graph) vs Open source (Space Radar). 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 Disk Graph or Space Radar wins on price.