Deterministic · Monte Carlo · Stress-tested

See your retirement clearly, all the way to the horizon.

Model multi-account portfolios, withdrawal strategies, Roth conversions, and market shocks. Everything runs in your browser — nothing leaves your device unless you choose to save it.

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Retirement calculator

Year-by-year projections across every account type, with RMDs, taxes, and three withdrawal strategies.

Monte Carlo & stress test

Thousands of market paths and shock scenarios to see how resilient your plan really is.

Save & compare

Save scenarios and portfolios to your account and revisit them any time.

Your data stays yours. Calculations run entirely in your browser. We store a scenario only when you explicitly save it, and you can export or delete everything at any time.