Feature comparison

Nektony Disk Space Analyzer Pro vs WhatSize

The paid App Store analyzer with collections, Quick Look, and file actions. A disk measurement utility with column browsing, filtering, and cleanup tools. See how their platforms, views, and cleanup workflows fit the way you work.

Sunburst / MixedPaid / Paid

Which fits your needs?

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

WhatSize: Mac users who favor column browsing and integrated duplicate/cleanup tools.

Features, pricing, and workflow

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FeatureNektony Disk Space Analyzer ProWhatSize
Best fitPeople who prefer an upfront App Store purchase with visual analysis and collections.Mac users who favor column browsing and integrated duplicate/cleanup tools.
VisualizationSunburst, file directories, and largest-items listSize-sorted columns and measurement views
Platforms and requirementsmacOSmacOS 11+ (current vendor requirements)
Pricing and editionsUS Mac App Store lists $19.99 upfront; check your region’s current listing.Vendor lists $14.99 and a 30-day trial; upgrades may be priced separately.
Open sourceNoNo
Native macOS UIYesYes
Cleanup workflowCollect selected files and folders, then move or remove them; check the current removal dialogue.Review the chosen cleaning or duplicate action before applying it.
Reports and portabilityThe App Store description does not establish scan-report export. Preserve paths and collection decisions before a fresh NullDisk scan.Preserve any saved measurements or reports supported by your version. The cited overview does not establish an import format shared with NullDisk.

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 →

WhatSize: what stands out

A good fit for Mac users who favor column browsing and integrated duplicate/cleanup tools.

WhatSize: strengths

  • Size-sorted columns and detailed filtering
  • Duplicate-file tools and cleanup categories
  • Updates measurements as the filesystem changes

Considerations

  • Paid license after the trial
  • Cleanup categories still require your judgment
  • Check upgrade terms separately from the initial purchase

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 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.

When should I choose WhatSize?

A good fit for Mac users who favor column browsing and integrated duplicate/cleanup tools. Vendor lists $14.99 and a 30-day trial; upgrades may be priced separately.

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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