Product guide · id-design, inc.

WhatSize review: features and tradeoffs

A disk measurement utility with column browsing, filtering, and cleanup tools. Explore its strengths, pricing, and practical tradeoffs before choosing.

MixedmacOS 11+ (current vendor requirements)Paid

WhatSize at a glance

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

FeatureWhatSize
Vendorid-design, inc.
PlatformmacOS 11+ (current vendor requirements)
PricingPaid — Vendor lists $14.99 and a 30-day trial; upgrades may be priced separately.
VisualizationSize-sorted columns and measurement views
Open sourceNo
CleanupReview the chosen cleaning or duplicate action before applying it.
Reports and switchingPreserve any saved measurements or reports supported by your version. The cited overview does not establish an import format shared with NullDisk.

Strengths and considerations

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

How cleanup works

Review the chosen cleaning or duplicate action before applying it. Confirm each file’s path and purpose before removing it. Items in Trash still occupy storage until it is emptied.

How NullDisk compares

A native Mac disk analyzer with radial and treemap views, SSH/cloud sources, and development cleanup. Consider it for Git-aware development cleanup or a workflow spanning local, SSH, and cloud storage. The separate CLI provides terminal browsing and structured reports.

All direct Mac features are free with reminders; an optional one-time license removes them.

NullDisk has no content-based duplicate finder. Its Mac app sends anonymous usage telemetry; read the privacy policy if that affects your choice.

Compare WhatSize and NullDisk → · Other alternatives → · Reports and switching →

Questions about WhatSize

Who should choose WhatSize?

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

Is WhatSize free?

Vendor lists $14.99 and a 30-day trial; upgrades may be priced separately.

How does WhatSize handle deletion?

Review the chosen cleaning or duplicate action before applying it.

Can I export a scan from WhatSize?

Preserve any saved measurements or reports supported by your version. The cited overview does not establish an import format shared with NullDisk.

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