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WhoCanUse vs Sim Daltonism: catalog facts
WhoCanUse	Sim Daltonism
Free Free to use; the developer accepts GitHub sponsorships.	Free Open source; the page does not list a price.
Web	macOS, iOS
Previews each color blindness type and other vision conditions Shows share of people affected by each condition	Live filtering of any screen area on the Mac Camera-based simulation on iOS
Checks one color pair at a time Does not scan a live web page	Apple platforms only Licence is not stated in the research
Web application	Downloadable app
Closed source	Open source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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