Which fits your needs?
Delve: Apple Silicon users on macOS 26+ who want two maps and staged cleanup.
Disk Inventory X: Users interested in the classic treemap or its community successors.
Features, pricing, and workflow
Scroll across to compare
| Feature | Delve | Disk Inventory X |
|---|---|---|
| Best fit | Apple Silicon users on macOS 26+ who want two maps and staged cleanup. | Users interested in the classic treemap or its community successors. |
| Visualization | Treemap, sunburst, and file list | Treemap; features depend on X, Xs, or Y |
| Platforms and requirements | macOS 26+, Apple Silicon | Original X 1.3: macOS 10.13–10.15; Xs/Y requirements differ |
| Pricing and editions | Vendor lists $4.99 once after a 14-day trial. | 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 | Stage items in the Collector, then send the reviewed batch to Trash. | Check the selected project’s manual; X, Xs, and Y do not share a guaranteed cleanup contract. |
| Reports and portability | The developer documents exporting maps as posters with Command-Shift-E. Keep that image as a reference; it is not a scan file that NullDisk can import. | Check export support in the exact X, Xs, or Y build. Retain its scan records separately; no direct import into NullDisk is documented. |
Delve: what stands out
A good fit for Apple Silicon users on macOS 26+ who want two maps and staged cleanup.
Delve: strengths
- Treemap, sunburst, and file list
- Logical and on-disk measurement with filtering
- Quick Look, collector-to-Trash, and map image export
Considerations
- Requires macOS 26 or later
- Apple Silicon only in the current requirements
- A map export is a visual record, not a file backup
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 Delve?
A good fit for Apple Silicon users on macOS 26+ who want two maps and staged cleanup. Vendor lists $4.99 once after a 14-day trial.
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.