Comparison

simpleFIRE vs FIRE_Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

simpleFIRE

Effortlessly plan your financial future with intuitive sliders and advanced settings. This ad-free calculator keeps your data private and secure on your device, offering a one-time purchase for lifetime access to all features.

Highlights
  • Intuitive sliders for financial input
  • Compound interest calculation
  • Advanced settings (withdrawal rates, inflation)
  • Ad-free experience
  • One-time payment for lifetime access
  • Privacy-focused, no data collection
Features
Read full description

simpleFIRE turns the big money questions into three simple calculators. Move a few sliders, watch the chart, and see what your plan really looks like. PROJECTION Start with what you already have, add what you invest each month, pick a period and an expected annual return. Watch the portfolio grow year by year, with your contributions and the interest they earned shown side by side. TIME TO FI Set your FI target and see when the portfolio gets there — the year and month, the passive income your target pays, and how far along you are each year. DRAWDOWN Start taking money out and see how long the portfolio lasts: the year and month it runs dry, how much you withdraw along the way, and whether the returns outrun your withdrawals. MONTE CARLO Markets don't pay the same return every year. Switch any calculator to Monte Carlo and test your plan against 5,000 market scenarios built on S&P 500 and US Treasury history since 1928. Set your mix of stocks and bonds with one slider and read the result at the confidence level you choose (90% by default): the portfolio you reach, when you reach FI, or the chance your withdrawals last through your planning horizon. EVERY NUMBER, EXPLAINED Tap the result card for the full picture: a year-by-year chart you can tap through, contributions and interest for each year and so far, the year interest overtakes your contributions, and a plain list of the assumptions behind the calculation. Inflation is one tap away on every calculator: see Projection in today's money, or set an FI target that keeps up with prices. PREMIUM — ONE PAYMENT, NO SUBSCRIPTION - Time to FI and Drawdown modes - Monte Carlo: thousands of market scenarios, your stocks and bonds mix, your confidence level - Saved profiles: keep several plans and switch in a tap - Calculation settings: inflation, contribution frequency, timing and yearly increases, compounding, withdrawal rate, planning horizon - PDF and image report: share a clean summary of any calculation, as a PDF or as a picture Projection is free and stays free. No ads anywhere in the app. PRIVATE BY DESIGN No account, no sign-in, no tracking, no analytics. Your numbers stay on your device, every simulation runs on it, and the app asks for no permissions. Built for iPhone and iPad, and it runs on Mac too. Dark and light themes, your currency, your number format. simpleFIRE gives you estimates based on the assumptions you set and on past market data, which does not guarantee future returns. It is a calculator, not financial advice. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

FIRE_Calculator

Visualize your savings and investments growing over time to determine if you are on track for early retirement. Input your financial details and goals to project your future wealth and assess your Financial Independence, Retire Early (FIRE) progress.

Highlights
  • Calculate investment growth
  • Set annual return rates
  • Add contributions
  • Project compound growth
  • Set retirement goals
  • Visualize financial path
  • Assess FIRE readiness
Features
Read full description

Take control of your financial future with FIRE Calculator — the most powerful and beautiful Financial Independence, Retire Early planning tool on iOS. Whether you're just starting your savings journey or fine-tuning your retirement strategy, FIRE Calculator gives you everything you need to plan with confidence. ALL YOUR DATA STAYS ON YOUR DEVICE No account required. No internet needed. 100% private. 4 FIRE STRATEGIES Lean FIRE — Minimalist lifestyle, fastest path to freedom Regular FIRE — Comfortable retirement without compromise Fat FIRE — Luxurious retirement, maximum financial security Coast FIRE — Reach your number, then stop contributing POWERFUL CALCULATIONS - Instant FIRE Number based on the proven 4% Rule - Year-by-year portfolio projection up to 60 years - Inflation-adjusted real return calculations - Social Security and pension income offset - Safe Withdrawal Rate (SWR) from 2% to 6% VISUAL INSIGHTS - Interactive portfolio growth chart - Balance, contributions, growth and withdrawal views - FIRE milestone tracker — $100k, Half FIRE, Coast FIRE, Full FIRE - Real-time progress bar toward your FIRE number SCENARIO PLANNING - Save and compare up to 10 different scenarios - Adjust return rate, expenses, contributions instantly - See the impact of pension and Social Security income LEARN AS YOU GO - Built-in guide explaining every FIRE concept - The 4% Rule explained simply - Lean, Regular, Fat, and Coast FIRE breakdowns - Safe Withdrawal Rate guide Start your journey to Financial Independence today. Your FIRE date is closer than you think.

Screenshots

simpleFIRE4 screens
FIRE_Calculator2 screens

Verdict

The call

The clearest difference is in-app purchases: FIRE_Calculator at none against simpleFIRE's 1. FIRE_Calculator also leads on iOS requirement (13.0 vs 16.0). simpleFIRE's advantage is update cadence (monthly vs every 10 months). On price, rating, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. simpleFIRE sells 1 one-off in-app purchase. FIRE_Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for simpleFIRE against 5.0 for FIRE_Calculator. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

simpleFIRE ships an update monthly, FIRE_Calculator every 10 months. The most recent releases landed on September 20, 2026 and September 13, 2026 respectively.

Scorecard4 real differences · 6 level
simpleFIRE versus FIRE_Calculator: the parameters behind the verdict, then further details
ParametersimpleFIREFIRE_Calculator
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyMonthly — betterEvery 10 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size3 MB6 MB
Age rating4+4+
DeveloperDAWID MICHAL MILCZAREKFeng chen

Customer experience

simpleFIRE

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

FIRE_Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

simpleFIRE

One-time1
  • Advanced Settings$24.99
None

FIRE_Calculator

No in-app purchases

Questions

Is simpleFIRE free?
simpleFIRE is free to download, with in-app purchases available.
Is FIRE_Calculator free?
FIRE_Calculator is free to download, with no in-app purchases.
Which has better reviews, simpleFIRE or FIRE_Calculator?
simpleFIRE and FIRE_Calculator are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do simpleFIRE or FIRE_Calculator have ads?
Neither simpleFIRE nor FIRE_Calculator shows ads.
Which is updated more often, simpleFIRE or FIRE_Calculator?
simpleFIRE ships an update monthly, and FIRE_Calculator every 10 months. Most recently, simpleFIRE was updated on September 20, 2026 and FIRE_Calculator on September 13, 2026.

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