Which fits your needs?
LumaDisk: Mac/Windows users wanting maps, duplicates, and build-cache discovery.
OmniDiskSweeper: Mac users who prefer a free size-sorted browser to a chart.
Features, pricing, and workflow
Scroll across to compare
| Feature | LumaDisk | OmniDiskSweeper |
|---|---|---|
| Best fit | Mac/Windows users wanting maps, duplicates, and build-cache discovery. | Mac users who prefer a free size-sorted browser to a chart. |
| Visualization | Sunburst, treemap, duplicate and unused-file lists | Largest-first column browser |
| Platforms and requirements | macOS (Apple Silicon), Windows | macOS |
| Pricing and editions | Seven-day full trial; scanning stays free. Vendor lists $6.89 once for the remaining features. | Free download from The Omni Group. |
| Open source | No | No |
| Native macOS UI | Cross-platform interface | Yes |
| Cleanup workflow | Queue selected items for removal; review the current app’s confirmation and recovery options. | Open or Trash selected files from the size-sorted browser. |
| Reports and portability | The cited page does not establish scan-report export. Preserve paths and selections before starting a fresh scan in NullDisk. | The official overview does not document report export. Keep important paths separately before rescanning in NullDisk. |
LumaDisk: what stands out
A good fit for Mac/Windows users wanting maps, duplicates, and build-cache discovery.
LumaDisk: strengths
- Sunburst and treemap with live scan updates
- Build-cache radar, duplicate groups, and unused-file lists
- OneDrive/Dropbox connections; iCloud through its local folder
Considerations
- Verify Mac CPU support; current site highlights Apple Silicon
- Features beyond scanning require an unlock after trial
- Google Drive is listed as coming soon
OmniDiskSweeper: what stands out
A good fit for Mac users who prefer a free size-sorted browser to a chart.
OmniDiskSweeper: strengths
- Largest-first file and folder browsing
- Open items or move them to Trash
- Official downloads include versions for older Macs
Considerations
- Column browsing rather than a graphical disk map
- Check the download requirements for your macOS version
- The cited overview does not document saved reports or duplicate matching
For a useful comparison on your own drive, match the scan root, access permissions, and size mode. Chart style changes how you explore the results; it does not by itself establish measurement accuracy.
Common questions
When should I choose LumaDisk?
A good fit for Mac/Windows users wanting maps, duplicates, and build-cache discovery. Seven-day full trial; scanning stays free. Vendor lists $6.89 once for the remaining features.
When should I choose OmniDiskSweeper?
A good fit for Mac users who prefer a free size-sorted browser to a chart. Free download from The Omni Group.
Will both apps show the same size?
Not necessarily. Match the scan root, permissions, exclusions, and logical/allocated-size mode. Hard links, APFS clones, snapshots, sparse files, and cloud placeholders can change totals. A reported size is not a guaranteed amount recovered after deletion.