Which fits your needs?
LumaDisk: Mac/Windows users wanting maps, duplicates, and build-cache discovery.
SquirrelDisk: People wanting a free open-source GUI across desktop systems and remote storage.
Features, pricing, and workflow
Scroll across to compare
| Feature | LumaDisk | SquirrelDisk |
|---|---|---|
| Best fit | Mac/Windows users wanting maps, duplicates, and build-cache discovery. | People wanting a free open-source GUI across desktop systems and remote storage. |
| Visualization | Sunburst, treemap, duplicate and unused-file lists | Sunburst, treemap, file list, and duplicates |
| Platforms and requirements | macOS (Apple Silicon), Windows | macOS, Windows, Linux |
| Pricing and editions | Seven-day full trial; scanning stays free. Vendor lists $6.89 once for the remaining features. | Free; AGPL-3.0 source published on GitHub. |
| Open source | No | Yes |
| Native macOS UI | Cross-platform interface | Cross-platform interface |
| Cleanup workflow | Queue selected items for removal; review the current app’s confirmation and recovery options. | Collector offers Trash, permanent removal, secure erase, or backup before deletion. |
| Reports and portability | The cited page does not establish scan-report export. Preserve paths and selections before starting a fresh scan in NullDisk. | The current overview does not establish an interoperable scan-report format. Preserve paths, duplicate decisions, and remote source settings separately. |
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
SquirrelDisk: what stands out
A good fit for people wanting a free open-source GUI across desktop systems and remote storage.
SquirrelDisk: strengths
- Live maps and a staged removal collector
- Content-based duplicate search
- SSH and rclone-backed cloud storage
Considerations
- Uses a cross-platform Rust interface rather than SwiftUI
- Permanent deletion and secure erase require deliberate review
- Cloud/SSH actions depend on provider and remote-system support
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 SquirrelDisk?
A good fit for people wanting a free open-source GUI across desktop systems and remote storage. Free; AGPL-3.0 source published on GitHub.
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.