Feature comparison

NullDisk vs Space Lens (CleanMyMac)

Native Mac disk maps with SSH/cloud sources, development cleanup, and a separate CLI. CleanMyMac’s bubble-map module for exploring disks and folders. See how their platforms, views, and cleanup workflows fit the way you work.

Mixed / BubblesFree / Paid

Which fits your needs?

NullDisk: Mac users managing local/remote storage, and developers who need Git-aware cleanup or scriptable disk reports.

Space Lens (CleanMyMac): Existing CleanMyMac users who want visual disk exploration within their suite.

Features, pricing, and workflow

Scroll across to compare

FeatureNullDiskSpace Lens (CleanMyMac)
Best fitMac users managing local/remote storage, and developers who need Git-aware cleanup or scriptable disk reports.Existing CleanMyMac users who want visual disk exploration within their suite.
VisualizationRadial map, treemap, and file list; CLI terminal treemapBubble-map storage explorer
Platforms and requirementsMac app: macOS 14+; CLI: macOS, Linux, WindowsmacOS
Pricing and editionsDirect Mac edition free with reminders; optional $9.99 one-time personal license or team seat removes reminders. App Store terms are separate.Part of CleanMyMac; check current subscription/one-time plans and edition availability.
Open sourceNoNo
Native macOS UIYesYes
Cleanup workflowReview source and action: local Trash, explicit permanent removal, or backup/delete; remote and cloud actions depend on the destination.Add selections to the cleanup list, review them, then run the module’s removal action.
Reports and portabilityCLI produces JSON/NDJSON scan reports. Third-party scan files are not directly imported into the Mac GUI.Keep screenshots and paths from Space Lens. The cited manual does not establish report interoperability with NullDisk.

NullDisk: what stands out

A good fit for Mac users managing local/remote storage, and developers who need Git-aware cleanup or scriptable disk reports.

NullDisk: strengths

  • Radial and treemap views with local, SSH, and cloud sources
  • Git-aware development cleanup for generated output and eligible worktrees
  • Native Mac UI plus terminal UI and JSON/NDJSON CLI reports

Considerations

  • Desktop GUI requires macOS 14+; Linux/Windows use the separate CLI
  • Mac app sends anonymous usage telemetry; no in-app opt-out at this review
  • No content-based duplicate finder; allocated bytes are not a guaranteed recovery total

NullDisk features →

Space Lens (CleanMyMac): what stands out

A good fit for existing CleanMyMac users who want visual disk exploration within their suite.

Space Lens (CleanMyMac): strengths

  • Bubble visualization of local and external storage
  • Folder-by-folder browsing and a reviewed removal list
  • Part of the broader CleanMyMac maintenance suite

Considerations

  • A suite module rather than a standalone purchase
  • Check module availability in your CleanMyMac edition
  • Suite licensing may be more than needed for disk analysis alone

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 NullDisk?

A good fit for Mac users managing local/remote storage, and developers who need Git-aware cleanup or scriptable disk reports. Direct Mac edition free with reminders; optional $9.99 one-time personal license or team seat removes reminders. App Store terms are separate.

When should I choose Space Lens (CleanMyMac)?

A good fit for existing CleanMyMac users who want visual disk exploration within their suite. Part of CleanMyMac; check current subscription/one-time plans and edition availability.

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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