Head to head
| SpaceLens | WhatSize | |
|---|---|---|
| Visualization | Mixed | List |
| Platform | macOS | macOS |
| Pricing | Paid Available via CleanMyMac subscription or one-time license | Paid Paid one-time license (around $15 at time of writing) |
| Open source | No | No |
| Native Mac | Yes | Yes |
Updated September 2026 · Prices change — please verify with the vendor.
SpaceLens
A bubble-map storage explorer inside the CleanMyMac suite.
＋ SpaceLens: Strengths
- Beautiful bubble-map view distinct from sunbursts and treemaps
- One click from analysis to automated cleanup inside the suite
- Backed by MacPaw's large support and update operation
－ SpaceLens: Weaknesses
- Requires the full CleanMyMac suite — no standalone purchase
- Subscription push where single-purpose rivals charge once
- Suite scope means deeper scans can feel like an upsell path
Read the review: SpaceLens → · SpaceLens 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: SpaceLens vs WhatSize
Choose SpaceLens if you want mixed visualization on macOS. 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, SpaceLens or WhatSize?
SpaceLens wins on mixed visualization for macOS; WhatSize wins on list views for macOS. On price, Paid (SpaceLens) 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 SpaceLens or WhatSize wins on price.