Which fits your needs?
SimplyDiskSweeper: Mac users who want a focused list workflow and explicit confirmation.
WhatSize: Mac users who favor column browsing and integrated duplicate/cleanup tools.
Features, pricing, and workflow
Scroll across to compare
| Feature | SimplyDiskSweeper | WhatSize |
|---|---|---|
| Best fit | Mac users who want a focused list workflow and explicit confirmation. | Mac users who favor column browsing and integrated duplicate/cleanup tools. |
| Visualization | Size-ranked folder hierarchy and filters | Size-sorted columns and measurement views |
| Platforms and requirements | macOS | macOS 11+ (current vendor requirements) |
| Pricing and editions | US Mac App Store lists $14.99 upfront; one-time purchase. | Vendor lists $14.99 and a 30-day trial; upgrades may be priced separately. |
| Open source | No | No |
| Native macOS UI | Yes | Yes |
| Cleanup workflow | Moves only selected items to macOS Trash after confirmation. | Review the chosen cleaning or duplicate action before applying it. |
| Reports and portability | The official page does not establish scan export. Keep useful paths before rescanning; permission scope can make totals differ. | Preserve any saved measurements or reports supported by your version. The cited overview does not establish an import format shared with NullDisk. |
SimplyDiskSweeper: what stands out
A good fit for Mac users who want a focused list workflow and explicit confirmation.
SimplyDiskSweeper: strengths
- Largest accessible items shown first
- Folder hierarchy browsing and filtering
- Selected items move to Trash after confirmation
Considerations
- Paid upfront rather than a free edition
- Measures accessible items within the selected folder
- Ranked browsing rather than a whole-drive graphical map
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
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 SimplyDiskSweeper?
A good fit for Mac users who want a focused list workflow and explicit confirmation. US Mac App Store lists $14.99 upfront; one-time purchase.
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.