Which fits your needs?
Nektony Disk Space Analyzer: Mac users who want a sunburst and integrated file-management actions.
OmniDiskSweeper: Mac users who prefer a free size-sorted browser to a chart.
Features, pricing, and workflow
Scroll across to compare
| Feature | Nektony Disk Space Analyzer | OmniDiskSweeper |
|---|---|---|
| Best fit | Mac users who want a sunburst and integrated file-management actions. | Mac users who prefer a free size-sorted browser to a chart. |
| Visualization | Sunburst, directories, and largest-items list | Largest-first column browser |
| Platforms and requirements | macOS | macOS |
| Pricing and editions | Free download; verify the selected store edition and its in-app purchase terms. | Free download from The Omni Group. |
| Open source | No | No |
| Native macOS UI | Yes | Yes |
| Cleanup workflow | Manage selected items with copy, move, and removal actions; check edition-specific availability. | Open or Trash selected files from the size-sorted browser. |
| Reports and portability | The overview does not establish a portable report format. Keep paths and the selected scan scope before comparing results in NullDisk. | The official overview does not document report export. Keep important paths separately before rescanning in NullDisk. |
Nektony Disk Space Analyzer: what stands out
A good fit for Mac users who want a sunburst and integrated file-management actions.
Nektony Disk Space Analyzer: strengths
- Sunburst and largest-items browsing
- Copy, move, or remove selected files
- Supports external volumes and accessible cloud-storage folders
Considerations
- Standard and Pro have separate store listings
- Check which actions require a purchase in the selected edition
- Mounted cloud folders do not necessarily represent an entire provider account
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 Nektony Disk Space Analyzer?
A good fit for Mac users who want a sunburst and integrated file-management actions. Free download; verify the selected store edition and its in-app purchase terms.
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.