Which fits your needs?
DaisyDisk: Mac users who want a sunburst, cloud connections, and snapshot tools.
JDiskReport: Users who want cross-platform disk statistics and already use Java.
Features, pricing, and workflow
Scroll across to compare
| Feature | DaisyDisk | JDiskReport |
|---|---|---|
| Best fit | Mac users who want a sunburst, cloud connections, and snapshot tools. | Users who want cross-platform disk statistics and already use Java. |
| Visualization | Sunburst and file list | Overview statistics charts and detail tables |
| Platforms and requirements | macOS | macOS, Windows, Linux (Java) |
| Pricing and editions | One-time license; free trial. Check vendor pricing and direct/App Store edition differences. | No-charge, ad-free freeware; this does not mean open source. |
| Open source | No | No |
| Native macOS UI | Yes | Cross-platform interface |
| Cleanup workflow | Collector stages items, then permanently removes them after confirmation and a cancellation countdown. It does not use macOS Trash. | Use the statistics to guide file review; the cited overview does not specify removal semantics. |
| Reports and portability | The cited overview does not establish a portable scan-report format. Preserve paths or screenshots and check the current manual before migrating. | Preserve any saved scan files supported by your version and keep important table entries. NullDisk does not import JDiskReport scan files. |
DaisyDisk: what stands out
A good fit for Mac users who want a sunburst, cloud connections, and snapshot tools.
DaisyDisk: strengths
- Sunburst navigation with Quick Look previews
- Physical-size accounting for clones and hard links
- Cloud connections and macOS snapshot management
Considerations
- Mac app; no Windows or Linux desktop edition
- Full functionality requires a paid license after trial
- Some capabilities differ between direct and App Store editions
JDiskReport: what stands out
A good fit for users who want cross-platform disk statistics and already use Java.
JDiskReport: strengths
- Disk usage statistics in charts and tables
- Runs across Java-capable desktop systems
- Free without ads or expiry
Considerations
- Requires a compatible Java runtime
- Freeware rather than an open-source project
- Check the manual for report storage and file-management actions
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 DaisyDisk?
A good fit for Mac users who want a sunburst, cloud connections, and snapshot tools. One-time license; free trial. Check vendor pricing and direct/App Store edition differences.
When should I choose JDiskReport?
A good fit for users who want cross-platform disk statistics and already use Java. No-charge, ad-free freeware; this does not mean open source.
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.