Compound Wealth Simulator vs Snowball 複利・積立シミュレーター
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Compound Wealth Simulator
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Compound Interest Calculator helps you visualize long-term investments with realistic, inflation-adjusted projections. Reverse-calculate from your savings goal, set independent contribution and growth periods, and plan with confidence for FIRE, retirement, or any long-term financial milestone. ■ Who this is for - Anyone planning long-term investments (IRA, Roth IRA, 401(k), ISA, NISA, iDeCo) - The FIRE community - Retirement planners - Goal-based savers - Inflation-conscious investors ■ 3 Calculation Modes - Calculate — Future value from initial assets and contributions - Reverse — Required monthly contribution to reach your goal - Compare — 3 return scenarios side by side ■ Independent Contribution Period Set your contribution years separately from your overall growth period (e.g. contribute for the first 10 years of a 30-year horizon, then let the balance compound). The chart highlights when contributions stop with a visual marker. ■ "Time to Goal" Reverse Calculation Calculate how long it takes to reach your target as "X years Y months." Just enter your monthly contribution and assumed return rate. ■ Inflation-Aware Display both nominal and real (purchasing-power) returns. Especially useful for users in high-inflation economies who want to understand the true future value of their savings. ■ 23 Currencies, 7 Languages Major world currencies including USD, EUR, GBP, JPY, CNY, KRW, INR, BRL, MXN, TRY. UI in English, Japanese, Chinese, Korean, Hindi, Spanish, and Portuguese. ■ Locale-Aware Number Formatting - Japan / China — 万, 億, 兆 - India — Lakh, Crore - English-speaking — K, M, B, T Numbers display in the format locals naturally read. ■ Privacy & Ads - All calculations happen on-device. Your input data is never sent to our servers. - This app is free, supported by in-app advertising. ■ Technical - iOS 15.6 or later - iPhone only ■ Disclaimer Calculations are simulations and do not guarantee future investment performance or inflation rates. Investment decisions are your own responsibility.
Snowball 複利・積立シミュレーター
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「貯金だけだと、静かに目減りする。」 Snowball(スノーボール)は、私たちが長く忘れてきた「金利」を、 視覚と体験で学び直すための複利・積立シミュレーターです。 ●ふやす — 毎月の積立と利回りから、将来の金額をその場で計算。 雪だるまが転がって育つグラフで、複利の力がひと目で分かります。 ●目標から逆算 — 目標額を決めると「毎月いくら?」「何年かかる?」 「利回り何%必要?」を逆算。目標までの道のりが具体的になります。 ●目減りチェック — 貯金だけを続けると、インフレで実質いくら目減りするか。 ●お年玉タイムマシン — 毎年のお年玉を「ただ貯金」と「運用」で比較。 結果はカードにして家族や友だちに共有できます。 ●目的 — 教育資金・老後資金など、目的ごとにプランを保存。 目標へのカバー率と「毎月あと◯円で届く」がいつでも見えます。 ●まなぶ — 子どもがひとりで進められる全6章のミニ教材。 インフレ・金利・複利・72の法則・時間・リスクを、 読んで、触って、クイズで確かめる。全部クリアで修了カードも。 ■ 4つの約束 ・広告ゼロ — 画面のどこにも広告は出ません ・トラッキングゼロ — データは1バイトも集めません ・完全オフライン — すべての計算は端末の中だけで動きます ・買い切り — サブスクはありません。お支払いは一度だけ 無料で「ふやす」「目減り」「お年玉」と教材の第1章、目的1件の保存が使えます。 Snowball PRO(¥800・買い切り)で、目的を最大5件・くらべる・月間見通し・ 教材の全6章が解除されます。 ※ 本アプリの計算は仮定にもとづく試算であり、将来の成果を保証するものでは ありません。特定の金融商品の勧誘や投資助言ではありません。
Screenshots
Verdict
The clearest difference is ads: Snowball 複利・積立シミュレーター at none against Compound Wealth Simulator's shown. Compound Wealth Simulator's advantage is iOS requirement (15.6 vs 26.5). On price, update cadence, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly daily. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.
| Parameter | Compound Wealth Simulator | Snowball 複利・積立シミュレーター |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily | Daily |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 26.5 |
| Further details — not scored | ||
| Size | 8 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Kyohei Hayakawa | taro tsujino |
In-app purchases
Compound Wealth Simulator
No in-app purchases
Snowball 複利・積立シミュレーター
No in-app purchases
Questions
Is Compound Wealth Simulator free?
Is Snowball 複利・積立シミュレーター free?
Do Compound Wealth Simulator or Snowball 複利・積立シミュレーター have ads?
Which is updated more often, Compound Wealth Simulator or Snowball 複利・積立シミュレーター?
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