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FIRECalc vs ProjectionLab: catalog facts
FIRECalc	ProjectionLab
Free Free to use on the web; no paid tier is mentioned.	Freemium Can be tried for free; paid plans are listed on the pricing page.
Web	Web
Tests plans against every historical start year since 1871 Shows worst-case outcomes rather than averages	Detailed year-by-year tax and cash flow projections Historical backtesting of plans
Assumes future markets resemble the past Plain, dated interface	Web only Tax features appear focused on the US system
Web application	Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

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