Feature comparison

Disk Inventory X vs Nektony Disk Space Analyzer Pro

A classic treemap with separate Apple Silicon revival and Swift rewrite projects. The paid App Store analyzer with collections, Quick Look, and file actions. See how their platforms, views, and cleanup workflows fit the way you work.

Treemap / SunburstOpen source / Paid

Which fits your needs?

Disk Inventory X: Users interested in the classic treemap or its community successors.

Nektony Disk Space Analyzer Pro: People who prefer an upfront App Store purchase with visual analysis and collections.

Features, pricing, and workflow

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FeatureDisk Inventory XNektony Disk Space Analyzer Pro
Best fitUsers interested in the classic treemap or its community successors.People who prefer an upfront App Store purchase with visual analysis and collections.
VisualizationTreemap; features depend on X, Xs, or YSunburst, file directories, and largest-items list
Platforms and requirementsOriginal X 1.3: macOS 10.13–10.15; Xs/Y requirements differmacOS
Pricing and editionsOriginal X is free under the GPL; Xs and Y are independent community projects.US Mac App Store lists $19.99 upfront; check your region’s current listing.
Open sourceYesNo
Native macOS UIYesYes
Cleanup workflowCheck the selected project’s manual; X, Xs, and Y do not share a guaranteed cleanup contract.Collect selected files and folders, then move or remove them; check the current removal dialogue.
Reports and portabilityCheck export support in the exact X, Xs, or Y build. Retain its scan records separately; no direct import into NullDisk is documented.The App Store description does not establish scan-report export. Preserve paths and collection decisions before a fresh NullDisk scan.

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

Full product guide → · Alternatives →

Nektony Disk Space Analyzer Pro: what stands out

A good fit for people who prefer an upfront App Store purchase with visual analysis and collections.

Nektony Disk Space Analyzer Pro: strengths

  • Sunburst, largest-items list, and Quick Look
  • Collect items for moving or removing
  • Scans external storage and accessible cloud folders

Considerations

  • Paid edition distinct from the free-download listing
  • Access depends on macOS permissions and chosen scan locations
  • A cloud-folder scan is not proof of direct provider-account access

Full product guide → · Alternatives →

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 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.

When should I choose Nektony Disk Space Analyzer Pro?

A good fit for people who prefer an upfront App Store purchase with visual analysis and collections. US Mac App Store lists $19.99 upfront; check your region’s current listing.

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.

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