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GrandPerspective vs DaisyDisk: catalog facts
GrandPerspective	DaisyDisk
Free Free and open source under the GPL.	Paid A one-time purchase is required. The software is closed source.
macOS	macOS
Saved scans can be compared to see what grew since last time Deletes or reveals a file straight from the map	Collect files into a holding area and delete them in one confirmed step Fast scans with a genuinely pleasant interface
macOS only, and the interface is deliberately plain	Paid application, macOS only
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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