Comparison

FIRE Cat vs FIREシミュレーション

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

Head to head
About

FIRE Cat

Features
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What does $10 a day become in 20 years? If a crash like 2008 hits right after you start, should you stop? How big a portfolio pays $1,000 a month in dividends, and how long will it take? FIRE Cat answers with real market history and a clear range — then keeps you company as you get a little closer to your goal every day. REAL MARKET BACKTESTS • US large caps with dividends, monthly since 1871 — start from any year • Daily, weekly or monthly investing • Annual return, max drawdown, worst year and biggest paper loss in one view • Plain answers like "In Feb 2009 the market was down 45%. If you kept going, you'd have…" SMART RANGE FORECASTS • Low, middle and high projections for daily, weekly or monthly investing • US large caps use the real spread of past returns over the same number of years • Assumed returns for US tech, global stocks, high dividend, gold and bitcoin — all editable • See the formula and a year-by-year table DIVIDEND PLANNER • Enter the monthly income you want, the yield and how much you invest a day • See the portfolio you need and about how long it takes • Reinvest dividends on or off, with yearly dividend bars STEADY PROGRESS • Set your plan once; FIRE Cat adds it up and estimates your balance every day • Update your real balance whenever you like, by account if you want — no bank or broker login • Record extra deposits, withdrawals, pauses and changes; compare plan and actual on one chart • See how long until your goal, and whether you're ahead of plan LOCK SCREEN WIDGETS • Lock Screen, small and medium Home Screen widgets • Time to goal, days invested and today's estimated balance • Updates every day without opening the app FREE AND PRO • Every calculation, backtest, dividend plan, progress view and widget is free — nothing is locked • The free version shows a banner under results; no video ads • Pro is a one-time purchase that removes all ads. Not a subscription PRIVACY • No account, no bank or broker connection • Your data stays on your iPhone and can be backed up to your own iCloud Data: US large-cap history calculated from Robert J. Shiller, Online Data. All results are hypothetical and for education only. Past performance does not guarantee future results. Fees, taxes and currency exchange are not included. Not investment advice. FIRE Cat is not affiliated with any index provider.

About

FIREシミュレーション

Features
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あなたのFIRE、本当に実現できる? 3分でわかる、人生とお金の未来シミュレーター 【FIREシミュレーションとは】 FIREシミュレーションは、「いつFIREできるのか?」「何歳まで働けばいいのか?」を資産・収入・支出の情報から可視化できるアプリです。 ・いつFIREしたい? ・貯金はいくらある? ・FIRE後の生活費や収入は? ・投資額、利回りはどのくらい? これらを入力するだけで、将来の資産推移をグラフで確認できます。結果は画像で保存・共有もOK! 【主な機能】 ● ライフプランに応じた収支を細かく設定 ・収入、支出を複数登録可能 ・それぞれに期間設定ができるから、人生の節目に合わせてシミュレーション可能 ● たとえばこんな使い方 ・子どもの教育費は高校〜大学の期間だけ多めに ・老後の食費や交通費は少なめに調整 ・「この年齢までは働く」など柔軟に入力 ・一時的な出費(車の購入・旅行など)も反映! ● シミュレーション結果は画像で保存・共有可能! ・可能かどうかの結果だけではなく、支出や収入を項目ごとに合計し見える化します 【こんな方におすすめ】 ・早期リタイア(FIRE)を目指している方 ・定年後の資産計画を立てたい方 ・家族のライフイベントを考慮した人生設計をしたい方 ・すでにFIRE中の方も、今後の生活の持続性をチェックできます 人生設計を“見える化”して、未来の安心を手に入れよう。 ※アプリによる結果はあくまでシミュレーションですので、実際にFIREが可能であることを保証するものではございません。FIREは慎重にご判断ください。

Screenshots

FIRE Cat4 screens
FIREシミュレーション4 screens

Verdict

The call

The clearest difference is in-app purchases: FIREシミュレーション at none against FIRE Cat's 1. FIREシミュレーション also leads on update cadence (every 2 days vs every 25 months) and iOS requirement (18.2 vs 26.0). On price, ads and device support 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. FIRE Cat sells 1 one-off in-app purchase. FIREシミュレーション asks for nothing beyond the download.

UpkeepUpdate frequency

FIRE Cat ships an update every 25 months, FIREシミュレーション every 2 days. The most recent releases landed on November 12, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 3 level
FIRE Cat versus FIREシミュレーション: the parameters behind the verdict, then further details
ParameterFIRE CatFIREシミュレーション
PriceFreeFree
Update frequencyEvery 25 monthsEvery 2 days — better
AdsYesYes
In-app purchasesYesNo — better
DevicesiPhone, iPad — betteriPhone
Requires iOS26.018.2 — better
Further details — not scored
Size13 MB13 MB
Age rating4+4+
DeveloperRUI QIMario Tanaka

In-app purchases

1 purchases

FIRE Cat

One-time1
  • Remove Ads$4.99
None

FIREシミュレーション

No in-app purchases

Questions

Is FIRE Cat free?
FIRE Cat is free to download, with in-app purchases available.
Is FIREシミュレーション free?
FIREシミュレーション is free to download, with no in-app purchases.
Do FIRE Cat or FIREシミュレーション have ads?
Both FIRE Cat and FIREシミュレーション show ads.
Which is updated more often, FIRE Cat or FIREシミュレーション?
FIRE Cat ships an update every 25 months, and FIREシミュレーション every 2 days. Most recently, FIRE Cat was updated on November 12, 2026 and FIREシミュレーション on November 4, 2026.

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