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FIRECalc vs Boldin: catalog facts
FIRECalc	Boldin
Free Free to use on the web; no paid tier is mentioned.	Freemium Can be tried for free, with additional features to unlock; prices are not stated here.
Web	Web
Tests plans against every historical start year since 1871 Shows worst-case outcomes rather than averages	Detailed modelling of taxes, income, property and healthcare What-if scenarios and Monte Carlo analysis
Assumes future markets resemble the past Plain, dated interface	Cloud service that holds your financial data Oriented toward US retirement rules
Web application	Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
No account needed	Account needed
Needs internet	Needs internet
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.