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Disk Space Analyzer vs WhatSize: catalog facts
Disk Space Analyzer	WhatSize
Freemium Free download, with a paid Pro version.	Paid Shareware costing $14.99, with a $9.99 upgrade price and a 30-day free trial.
macOS	macOS
Sunburst and treemap views of disk usage Lists the biggest files in order	Largest files and folders listed first Finder-style column view for drilling into folders
macOS only Some features require the paid version	macOS only Paid after the 30-day trial
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.