Head to head
| Diskaroo | WhatSize | |
|---|---|---|
| Visualization | Treemap | List |
| Platform | macOS + Windows + Linux | macOS |
| Pricing | Freemium Free tier; Pro is a one-time unlock (around $20 at time of writing) | Paid Paid one-time license (around $15 at time of writing) |
| Open source | No | No |
| Native Mac | No | Yes |
Updated September 2026 · Prices change — please verify with the vendor.
Diskaroo
A treemap visualizer with collector tray and smart filters.
＋ Diskaroo: Strengths
- Treemap plus collector tray mirrors the best cleanup flows
- Smart filters and duplicate detection in Pro
- Runs on all three desktop platforms
－ Diskaroo: Weaknesses
- Pro unlock costs more than several native Mac rivals
- Cross-platform UI rather than native SwiftUI feel
- Newer brand with limited independent reviews
Read the review: Diskaroo → · Diskaroo See alternatives →
WhatSize
A fast measuring sorter with column views and cleanup tools.
＋ WhatSize: Strengths
- Deep measuring with column, outline, and chart views
- Finds large, duplicate, and orphaned files beyond simple sizes
- Appeals to power users who live in column browsers
－ WhatSize: Weaknesses
- Dense, technical UI with a real learning curve
- Paid license with no free tier for casual use
- Visualization is secondary to tables and lists
Read the review: WhatSize → · WhatSize See alternatives →
Verdict: Diskaroo vs WhatSize
Choose Diskaroo if you want treemap visualization on macOS + Windows + Linux. Choose WhatSize if you prefer list views at paid pricing on macOS. And if you want a native Mac sunburst with a staged collector and zero telemetry, NullDisk is the third option that beats both on workflow.
Frequently asked questions
Which is better, Diskaroo or WhatSize?
Diskaroo wins on treemap visualization for macOS + Windows + Linux; WhatSize wins on list views for macOS. On price, Freemium (Diskaroo) vs Paid (WhatSize). The honest answer depends on your OS and whether you prefer maps or lists — read the verdict below.
Is there something better than both?
If you want a native Mac sunburst with allocated-size honesty, a staged removal collector, and zero data collection, NullDisk beats both on workflow — even where Diskaroo or WhatSize wins on price.