Which fits your needs?
Disk Graph: People who want saved storage history or a companion on iPhone/iPad.
Disk Inventory X: Users interested in the classic treemap or its community successors.
Features, pricing, and workflow
Scroll across to compare
| Feature | Disk Graph | Disk Inventory X |
|---|---|---|
| Best fit | People who want saved storage history or a companion on iPhone/iPad. | Users interested in the classic treemap or its community successors. |
| Visualization | Radial pie chart, treemap, and snapshot sequences | Treemap; features depend on X, Xs, or Y |
| Platforms and requirements | macOS, iOS, iPadOS | Original X 1.3: macOS 10.13–10.15; Xs/Y requirements differ |
| Pricing and editions | Commercial app; check current developer and App Store purchase options. | Original X is free under the GPL; Xs and Y are independent community projects. |
| Open source | No | Yes |
| Native macOS UI | Yes | Yes |
| Cleanup workflow | Preview, reveal, or move selected items to the bin. | Check the selected project’s manual; X, Xs, and Y do not share a guaranteed cleanup contract. |
| Reports and portability | Export a snapshot and keep it: the developer documents JSON/TSV records that can be viewed in a text editor. NullDisk does not import these snapshots. | Check export support in the exact X, Xs, or Y build. Retain its scan records separately; no direct import into NullDisk is documented. |
Disk Graph: what stands out
A good fit for people who want saved storage history or a companion on iPhone/iPad.
Disk Graph: strengths
- Switch between radial charts and treemaps
- Logical size, allocated size, or file-count modes
- Export snapshots and animate changes across a sequence
Considerations
- Mobile scans cover locations accessible through Files
- Snapshots record inventory, not backed-up file contents
- Historical snapshots need a fresh scan before cleanup
Disk Inventory X: what stands out
A good fit for users interested in the classic treemap or its community successors.
Disk Inventory X: strengths
- Treemap visualization of disk usage
- Xs updates the original codebase for Apple Silicon
- Y is a separate Swift/SwiftUI rewrite
Considerations
- The original X, revival Xs, and rewrite Y are different apps
- Compatibility and features depend on the chosen build
- Check each project’s current release and signing instructions
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 Disk Graph?
A good fit for people who want saved storage history or a companion on iPhone/iPad. Commercial app; check current developer and App Store purchase options.
When should I choose Disk Inventory X?
A good fit for users interested in the classic treemap or its community successors. Original X is free under the GPL; Xs and Y are independent community projects.
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.