FIRE vs CompoundFX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FIRE
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Wealthy isn't rich. Wealthy means your money supports your life without needing your time in return. Most people picture financial independence as one distant finish line. It isn't. You cross three. FIRE Projection teaches you what each one means, in your own figures, then projects the age and year you reach it. You may be further along than you think. YOUR PATH • Coast FIRE. Your investments can reach your full number on their own. You can stop saving. • Barista FIRE. Part-time income covers part of your spending. Your portfolio covers the rest. You can leave full-time work. • Full FIRE. Your investments cover your spending at about a 4% withdrawal. Work becomes optional. THE MATH Spend $5,000 a month. That is $60,000 a year. Multiply by 25. Your Full FIRE number is $1,500,000. A 4% withdrawal from $1,500,000 is $60,000. The amount you spend. Growth uses a 6.5% real return after inflation, compounded monthly. Every assumption is visible, and you can change it. It is a projection, not a promise. WHAT YOU ENTER Five things you can answer today: • Invested today • Saving each month • Spending each month • Your birth date • Your target retirement age No guesses about future raises, inheritances, or interest rates decades out. MOVE THE LEVERS Change your saving, your spending, your target age, your part-time income, or your return. Watch the dates move. The point is not just knowing when. It is knowing what brings it closer. WHY OTHER TOOLS FELT WRONG Most retirement calculators ask you to predict what you cannot know. Forty guesses, and the answer moves with every one. FIRE Projection starts with the life you have now. WHAT PREMIUM ADDS • Multiple invested accounts • Multiple saving streams • Snapshot history • Social Security NPV • An editable real return rate • CSV export Free to download. A 30-day trial unlocks the full app. Monthly or annual after that. Not forty guesses. Three milestones, honest math, and the levers that bring freedom closer. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://fireprojection.io/privacy-policy
CompoundFX
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CompoundFX is the compound interest calculator that shows you what it takes, not just what you'll have. Model investment growth, plan for retirement, and pressure-test your FIRE goals with precision. Set a goal, $1M by age 60, a down payment, or a college fund, and CompoundFX solves for the missing piece. The rate you’ll need. The years it will take. The deposit you have to make. No more guessing. No more trial and error. GOAL MODE Pick your goal. Choose what to solve for. CompoundFX does the financial math. - Solve for Rate of Return - Solve for Time Horizon - Solve for Starting Principal - Solve for Monthly Contribution COMPARE SCENARIOS Should you save more or invest longer? Pay off debt or boost your 401(k)? Save scenarios and put them head-to-head. See the difference, the total dollar impact, and exactly when one strategy pulls ahead. A CALCULATOR THAT SHOWS ITS WORK - Real-time growth chart with milestone markers ($100K, $250K, $1M) - Year-by-year breakdown with full transparency - Inflation, Taxes, and Expense Ratios: See what you actually keep after fee drag - Daily, weekly, monthly, or annual contributions - Custom compounding intervals (Daily to Annually) - Sub-year precision for short-horizon plans DESIGNED FOR iPHONE & INDIE DEV Dark glass UI. Smooth haptics. Built natively in SwiftUI for iOS 17 and up. No accounts. No ads. No tracking. Your scenarios stay locally on your device. EXPORT AND SHARE Generate a polished two-page PDF report with an executive summary, growth chart, and full milestone breakdown. Or share a branded image to text or social media. FREE FEATURES - Full compound interest calculator - Real-time growth chart and year-by-year table - Inflation, tax, and expense adjustments - Custom contribution and compounding schedules - Branded image sharing PRO: $4.99 (ONE-TIME PURCHASE) - Goal Mode (Solve for any missing variable) - Save unlimited scenarios - Compare scenarios side-by-side - Export two-page PDF reports One purchase. Unlocked forever. Family Sharing fully supported. WHO IT'S FOR Whether you're starting your first Roth IRA, managing index funds, planning early retirement, modeling a college fund, or tracking a Bogleheads portfolio, CompoundFX gives you the answer in seconds. PRIVACY FIRST CompoundFX is fully offline. No data collection. No accounts required. No analytics. No third-party SDKs. Your personal finance data is stored safely on your device. DISCLAIMER CompoundFX is for educational and planning purposes. It does not provide investment, tax, or financial advice. Returns shown are projections based on the inputs you provide and do not guarantee actual investment performance. Questions or feedback? support@originsoftware.net
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Verdict
The clearest difference is update cadence: FIRE at every 10 days against CompoundFX's every 2 months. FIRE also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. FIRE sells 2 in-app purchases, starting at $7.99 per month and CompoundFX sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
FIRE ships an update every 10 days, CompoundFX every 2 months. The most recent releases landed on September 3, 2026 and September 18, 2026 respectively.
| Parameter | FIRE | CompoundFX |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 45 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Max McGregor | Origin Software, Inc. |
In-app purchases
FIRE
- FIRE Projection Premium1 Month trial$7.991 Month
- Premium Yearly1 Month trial$14.991 Year
CompoundFX
- CompoundFX Pro$4.99









