What this registry can—and cannot—show
The registry identifies each tool’s model class, current version, latest review and data freshness. It makes errors easier to find and old results easier to interpret; it is not professional certification and does not turn an educational model into personal advice.
Current tool registry
| Tool | Model class | Version | Last reviewed | Data status | Sensitivity | Published verification |
|---|---|---|---|---|---|---|
| FIRE Calibration | Reflection | 1.0 | No external dataset | Planning aid | Implementation-tested; no external validation | |
| Fixed Cost Freedom Calculator | Formula | 1.1 | User inputs; no live feed | Financial assumptions | Registry only | |
| Independent Income Freedom Calculator | Formula | 1.0 | User inputs; no live feed | Financial assumptions | Registry only | |
| Five FIRE Paths Calculator | Formula | 1.1 | User inputs; no live feed | Financial assumptions | Registry only | |
| FIRE Resilience Stress Test | Scenario | 1.0 | User inputs; no live feed | Financial assumptions | Registry only | |
| Retirement Lifecycle Calculator | Formula | 1.1 | User inputs; no live feed | Financial assumptions | Registry only | |
| Portfolio Backtest | Historical | 1.0 | Market snapshot: Aug 2026 | Financial assumptions | Method card published | |
| Custom Portfolio Backtest | Historical | 1.0 | Market snapshot: Aug 2026 | Financial assumptions | Method card published | |
| Custom Portfolio Forecast | Scenario | 1.0 | User inputs; no live feed | Financial assumptions | Method card published | |
| Company DCF Calculator | Formula | 1.0 | User inputs; no live feed | Financial assumptions | Method card published | |
| Reverse DCF Calculator | Formula | 1.0 | User inputs; no live feed | Financial assumptions | Method card published | |
| Options Payoff Calculator | Formula | 1.0 | User inputs; no live feed | Financial assumptions | Method card published | |
| Car Total Cost of Ownership | Formula | 1.0 | User inputs; no live feed | Planning aid | Registry only | |
| Netherlands vs Belgium FIRE Tax Comparison | Policy preset | 1.0 | Policy snapshot: Oct 2026 | High: verify locally | Registry only | |
| Global FIRE Tax Comparison | Policy preset | 1.0 | Policy snapshot: Oct 2026 | High: verify locally | Registry only | |
| Market Calm Card | Reflection | 1.0 | No external dataset | Planning aid | Registry only | |
| Freedom Rhythm Check-in | Reflection | 1.0 | No external dataset | Planning aid | Registry only | |
| Low-Energy Day Planner | Reflection | 1.0 | No external dataset | Planning aid | Registry only |
Evidence boundaries for reflection tools
A structured reflection is not a validated questionnaire, and implementation-tested is not the same as outcome-validated. External references provide context for prompts and limitations; they do not endorse Rich2Fire. FIRE Calibration separately publishes the status of external expert review, psychometric validation and outcome validation, and says plainly when each has not been completed.
How versions change
A formula, rate, default, dataset or material transformation that can change the result for the same inputs triggers a model-version update. Spelling, layout, accessibility, search metadata and explanatory copy that does not change results normally do not, although material transparency changes still appear in the changelog.
A review date is not a live-data promise
‘Last reviewed’ means the implementation and public explanation were checked on that date. Policy and market data can change afterward; policy presets and fixed historical series therefore carry a separate freshness label. Tax tools in particular require rechecking the linked primary sources before action.
How to cite a tool
Every tool ends with a copyable citation containing the organization, tool name, model version, review date and stable URL. If a tool offers a reproducible link or export, preserve it too; otherwise record the access date, material assumptions and version you used.