Description
Open-source FIRE retirement portfolio simulator that runs your plan against 150+ years of historical US market data. Configure portfolio size, annual spending, asset allocation, withdrawal strategies, Social Security income, and more to see what percentage of historical scenarios your retirement survives.
No-Login Task
"Simulate retirement portfolio longevity using historical market sequences and Monte Carlo analysis, with configurable withdrawal strategies and income sources"
Editorial Review & Verification
Hands-on VerifiedCrowdsourced, open-source financial independence and early retirement (FIRE) Monte Carlo portfolio simulator.
+ Key Strengths (Pros)
- ✓ Simulates retirement portfolio longevity against historical US stock, bond, and inflation data since 1871
- ✓ Models custom spending plans, Social Security timing, pensions, and sequence of returns risk
- ✓ Completely open-source with zero financial ads, predatory loan tracking, or user accounts
− Limitations (Cons)
- − Requires familiarity with financial independence terminology (SWR, asset allocation, glide paths)
- − Interface is functional and spreadsheet-inspired rather than a modern consumer app
Deep Privacy & Sandbox Audit & Product Power & Utility Review
Client-side financial simulation. Your asset amounts, savings trajectory, and retirement years are processed locally via JavaScript calculations without corporate harvesting.
Simulated 40-year portfolio retirement outcomes across 150 historical market cycles: Monte Carlo returns and inflation-adjusted charts generated in <600ms.
- ✓ Client-side processing is supported by catalog metadata and runtime evidence
- ✓ Bounded runtime observation found no payload egress; this is not architectural proof
- ✓ Runs locally without persistent server dependencies
- ✓ No commercial ad networks or cross-site tracking beacons
- ✓ Zero tracking pixels or third-party behavioral profiling scripts
- ✓ Clean script execution environment without user fingerprinting
- ✓ Proprietary frontend and application service
- ✓ Zero-login functionality verified by NoLoginTools manual audit
- ✓ Runtime network egress and cookies verified via automated scanner
- ✓ Tool is online and accessible
- ✓ Monitored continuously by NoLoginTools automated prober
- ✓ No scheduled downtime or access gating detected
NoLogin Lab™ Verified Telemetry & Empirical Audit
Zero data retention; all operations executed strictly in local client memory.
Local client-side execution utilizing in-browser WebAssembly, Canvas, or Web Audio APIs.
Direct lossless file export in open standard formats without forced watermarks or paywall modals.
Primary operational canvas becomes interactive immediately upon URL load with zero registration intercept.
Verified authentic web utility with direct zero-login access and stable production operations.
Verification Details
Client-side financial simulation. Your asset amounts, savings trajectory, and retirement years are processed locally via JavaScript calculations without corporate harvesting.
Tags
Health History
FAQ
- Does cFIREsim require an account?
- No. cFIREsim has been verified by nologin.tools to provide its core functionality — Simulate retirement portfolio longevity using historical market sequences and Monte Carlo analysis, with configurable withdrawal strategies and income sources — without requiring any login or signup.
- Is cFIREsim free to use?
- cFIREsim is listed on nologin.tools as a tool you can use without creating an account. Check the tool's own site for details on pricing or premium features.
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