Side by side
driftcurve vs T. Rowe Price Retirement Income Calculator
Both stand on retirement planning software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Open source APISelf-hostedWeb
driftcurve brings broad household inputs, return assumptions, and scenario comparison into a free retirement modeling tool. Keep in mind its guardrail requirements and that its forecasts are educational, not professional advice.
Visit driftcurve Free plan Web
The calculator lets users explore retirement scenarios and see how selected changes affect a projected probability of success. Its estimates are educational and depend on assumptions, with several account and contribution factors omitted.
Visit T. Rowe Price Retirement Income CalculatorThe facts
| driftcurve | T. Rowe Price Retirement Income Calculator | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Yes | Not published |
| Runs on | API, Self-hosted, Web | Web |
| Lowest paid plan | Free or on request | Not published |
| Plans published | 1 | None |
| Maker | Not published | Not published |
| Website | github.com | troweprice.com |
| On retirement planning software | #1 of 26 | #19 of 26 |
driftcurve: what it does well
- Models multiple household members and financial account types.
- Includes risk-based monthly spending guardrails.
- Compares two scenarios on one chart.
- Free, open source, and licensed under Apache 2.0.
What to know first
- No account synchronization is available.
- Guardrails require a retirement year and positive liquid portfolio.
- Guardrail computations take about 20–45 seconds.
- Local setup requires Python and running the app.
T. Rowe Price Retirement Income Calculator: what it does well
- Models 1,000 hypothetical market scenarios.
- Allows adjustments to retirement age, expenses, savings, and income.
- Supports planning-partner details and anticipated cash income.
- Includes Social Security estimates unless users indicate ineligibility.
What to know first
- Results are hypothetical, not guarantees.
- Does not account for current contribution or distribution limits.
- Omits inherited assets and Roth accounts.
- Does not provide personalized investment advice.
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