Which fits your needs?
Delve: Apple Silicon users on macOS 26+ who want two maps and staged cleanup.
Disk Graph: People who want saved storage history or a companion on iPhone/iPad.
Features, pricing, and workflow
Scroll across to compare
| Feature | Delve | Disk Graph |
|---|---|---|
| Best fit | Apple Silicon users on macOS 26+ who want two maps and staged cleanup. | People who want saved storage history or a companion on iPhone/iPad. |
| Visualization | Treemap, sunburst, and file list | Radial pie chart, treemap, and snapshot sequences |
| Platforms and requirements | macOS 26+, Apple Silicon | macOS, iOS, iPadOS |
| Pricing and editions | Vendor lists $4.99 once after a 14-day trial. | Commercial app; check current developer and App Store purchase options. |
| Open source | No | No |
| Native macOS UI | Yes | Yes |
| Cleanup workflow | Stage items in the Collector, then send the reviewed batch to Trash. | Preview, reveal, or move selected items to the bin. |
| 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. | 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. |
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 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
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 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.
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.