Comparison

Compound Interest Pro vs サブスガード

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

Head to head
About

Compound Interest Pro

This app simulates asset growth, helping you calculate savings, withdrawals, and goal achievement with detailed graphs and tables. It offers professional-grade precision for financial planning scenarios like retirement and education savings.

Highlights
  • Future Value Calculator
  • Contribution/Withdrawal Calculator
  • Time to Goal Calculator
  • Required Rate Calculator
  • Visualized graphs and tables
  • Annual/monthly compounding support
  • High-precision decimal calculations
Features
Read full description

Compound Interest Professional is a highly precise asset management simulator that lets you calculate savings contributions, withdrawals, goal achievement, required rates, and more. It visualizes your future asset growth with graphs and tables, so you can track principal, interest, and balances for each period. Key Features 1. Future Value Calculator Enter your initial principal, regular contributions, and interest rate to project your total future assets. Add a withdrawal amount to simulate scenarios where you draw down principal while continuing to invest. 2. Contribution/Withdrawal Calculator Figure out how much to save monthly (or annually) to hit your target—or how much you can withdraw each period. 3. Time to Goal Calculator Calculate how many years it will take to reach your goal based on your contribution amount and interest rate. Supports withdrawal scenarios too. 4. Required Rate Calculator Find the annual return rate needed to achieve your target amount. Features - Results are visualized with graphs and tables, so you can easily check details by period. - Supports annual/monthly compounding, as well as accumulation and withdrawals. - High-precision decimal calculations minimize errors. Flexible and Accurate • Professional-grade precision using high-accuracy decimal maths — no rounding errors. • Choose between yearly or monthly compounding and contribution frequencies. • Instant recalculation: change any figure and the results update immediately. • No registration, no ads, no tracking — your data stays on your device. Use Cases - Roth IRA, traditional IRA, and SEP IRA contribution planning - 401(k) and employer match optimization - HSA triple tax advantage projections - 529 plan for education savings (state tax benefits) - Roth conversion ladder for early retirees (FIRE) - High-yield savings account (HYSA) comparison - CD ladder strategies and Treasury planning - Mortgage payoff vs investment decision modeling - DCA into ETFs, index funds, or REITs - 4% rule and safe withdrawal rate scenarios An asset management tool to accurately and simply experience the full power of compound interest. Example Scenarios “If I invest $500 per month for 20 years at 6%, how much will I have?” “How much can I withdraw monthly from $300,000 at 4% for 15 years?” “What rate do I need to reach $1M in 25 years?” “How long will my savings last if I withdraw $2,000 monthly?” "If I max out my Roth IRA ($7,000) annually for 30 years at 7%, how much at age 65?" "If I contribute $1,000/month to my 401(k) with 50% employer match, what's the balance at retirement?" "If I open a 529 plan with $200/month for 18 years, how much for college?" "How long will my HYSA last withdrawing $3,000/month at 4.5% APY?" "What's the safe withdrawal rate from $1M to last 30 years?" 《 About Using the App 》 You may use this service only if you agree to the Terms of Service. The moment you start using the app, a service agreement is established between you and our company. If you're a minor, please use this service only with the consent of your parent or legal guardian.Terms of Use: https://cicalc-74e14.web.app/en/info/#terms Privacy Policy: https://cicalc-74e14.web.app/en/privacy

About

サブスガード

Read full description

【サブスガード — 家計の見張り番】 口座連携ゼロで今日から始める、シンプルなサブスク管理アプリ。 【日本サービス230+プリセット】 Netflix・Spotify・dアニメ・U-NEXT・楽天マガジン・Amazon Prime など、 国内外の主要サブスクを230件以上プリセット収録。「ネトフリ」と打って即追加。 【すべての機能を無料で】 本アプリは広告で運営しており、すべての機能を無料でご利用いただけます。 ・月次総額の一目確認 ・カテゴリ別コスト分析(円グラフ) ・ホーム画面ウィジェット ・更新7日前・前日の自動通知 ・段階的解約リマインダー(3か月前/1か月前/2週間前) ・「使った?」タップ記録で未使用検知 ・CSVエクスポート・共有(Excel/Numbers 文字化けなし) ・重複サブスク検知(同カテゴリ + 未使用連携) ・Family Sharing(最大6名対応) 【広告について】 画面下部にバナー広告が表示されます。動画広告を見ると、24時間バナー広告を非表示にできます。 【プライバシー】 すべて端末ローカル保存。銀行口座への接続、自動取引取得なし。 個人の支出データや銀行情報は一切収集しません。 利用規約: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ プライバシーポリシー: https://bbintroduction.com/apps/subsguard/privacy/

Screenshots

Compound Interest Pro3 screens
サブスガード4 screens

Verdict

The call

The clearest difference is in-app purchases: Compound Interest Pro at none against サブスガード's 1. Compound Interest Pro also leads on update cadence (weekly vs monthly) and device support. On price 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. サブスガード sells 1 one-off in-app purchase. Compound Interest Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Compound Interest Pro ships an update weekly, サブスガード monthly. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 5 level
Compound Interest Pro versus サブスガード: the parameters behind the verdict, then further details
ParameterCompound Interest Proサブスガード
PriceFreeFree
Rating4.8 (5 ratings) — better—
Number of ratings5 — better—
Update frequencyWeekly — betterMonthly
AdsYes—
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — better—
Requires iOS15.1 — better17.0
Further details — not scored
Size39 MB4 MB
Age rating4+4+
Developerowen,inc.reiji onishi

In-app purchases

None

Compound Interest Pro

No in-app purchases

1 purchases

サブスガード

One-time1
  • Unlock All$2.99

Questions

Is Compound Interest Pro free?
Compound Interest Pro is free to download, with no in-app purchases.
Is サブスガード free?
サブスガード is free to download, with in-app purchases available.
Which is updated more often, Compound Interest Pro or サブスガード?
Compound Interest Pro ships an update weekly, and サブスガード monthly. Most recently, Compound Interest Pro was updated on October 11, 2026 and サブスガード on October 10, 2026.

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