Compare software

cFIREsimProjectionLab
Free

Free to use in the browser.

 Freemium

Can be tried for free; paid plans are listed on the pricing page.

Web Web
  • Tests withdrawal plans against historical data
  • Runs in the browser with nothing to install
  • Detailed year-by-year tax and cash flow projections
  • Historical backtesting of plans
  • Focused on US retirement planning
  • Detailed tax modelling lives on the separate FIREproof site
  • 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
Not stated if an account is needed Not stated if an account is needed
Needs internet Not stated if it works offline

Checked October 2, 2026

Checked September 24, 2026

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