Retirement FIRE Calculator
When Can I Retire? Planner
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
When can you retire — and will the money last? Project your nest egg, find your FIRE number and stress-test your drawdown, all from numbers you control.
PREMIUM — PURCHASE REQUIRED: All features described below are part of Pro and require a purchase: a weekly or yearly auto-renewing subscription, or a one-time lifetime purchase.
When can you retire — and will your savings actually last? RetireCalc turns the three questions every retirement plan hangs on into clear numbers: the nest egg you are on track for, the FIRE number you need, and the age your money runs out once you start withdrawing.
Most calculators hide their math. RetireCalc states every convention on screen: returns compound monthly, contributions land at the end of each month, inflation uses the exact Fisher relation, and drawdown withdraws at the start of each year — the same convention as Bengen (1994) and the Trinity Study behind the 4% rule. Every rate is yours to set; nothing is a forecast, and you can compare results against the U.S. SEC compound interest calculator with one tap.
WHAT YOU GET
• Your projected nest egg at any retirement age — nominal and in today's dollars — updating the instant you move a slider
• Your FIRE number, plus Lean, Fat, Coast and Barista FIRE targets, each derived from a withdrawal rate you control
• "About 14 years to financial independence," computed at the real after-inflation return, not the flattering nominal one
• A drawdown curve that shows the exact age your balance hits zero — and how a half-percent change moves it
• A Monte Carlo stress test across 500 simulated markets: see the share of runs your plan survives, plus the bad-luck and good-luck endings
• Side-by-side scenarios — retire at 60 vs 65, contribute 600 vs 900 a month — on one comparison chart
PERFECT FOR
• FIRE-movement savers working toward lean, coast or barista independence
• Anyone in their 30s to 50s asking whether the current savings rate is actually enough
• Pre-retirees choosing a safe withdrawal rate before handing in their notice
• Couples weighing "retire at 60 vs 62" with real numbers instead of gut feel
WHY NOT JUST A FREE ONLINE CALCULATOR?
Most quote a nominal balance decades out — a number that cannot buy what it appears to — and bury their assumptions. RetireCalc shows inflation-adjusted figures alongside nominal ones, prints its method under every result, and drives years-to-independence with the real return so both sides of the comparison are in today's money. Your plan travels with its assumptions, so a shared figure can never be mistaken for advice.
PRIVATE BY DEFAULT
Every projection is computed on your iPhone from numbers you type in. No account, no bank or brokerage login, no personal data collected.
PREMIUM (PURCHASE REQUIRED)
RetireCalc Pro — available as a weekly subscription, a yearly subscription, or a one-time lifetime purchase — unlocks drawdown modeling, the 500-run Monte Carlo stress test, unlimited saved scenarios with the comparison chart, the contribution goal solver, plan-summary export, and the complete retirement and FIRE learning library.
Download RetireCalc, move three sliders, and see the year you can stop working.
These are estimates for planning only, not financial advice. Actual returns vary and may be negative.
Terms of Use: https://leanstudio.asia/terms-of-use
Privacy Policy: https://leanstudio.asia/privacy-policy
Support: support@leanstudio.asia
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Bug fixes and performance improvements.
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Subscriptions
In-App Purchases
The developer, LEAN ASIA CO., LTD, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- LEAN ASIA CO., LTD
- Size
- 4.7 MB
- Category
- Finance
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Compound Interest Lifetime $29.99
- Nest Egg Yearly $14.99
- Safe Withdrawal Weekly $2.99
- Copyright
- © 2026 LEAN ASIA CO., LTD
