Comparison

ローン計算 @返済くんLoan vs Simple

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

Head to head
About

ローン計算 @返済くんLoan

This tool helps real estate and mortgage professionals quickly calculate loan scenarios. It offers advanced features like detailed interest calculations, debt-to-income ratios, and borrowing capacity, with a free tier for basic functions and a trial for premium features.

Highlights
  • Quick input buttons for large sums
  • Precise interest rate adjustments
  • Customizable debt-to-income ratio tables
  • Advanced loan eligibility simulations
  • Calculates total repayment and interest
  • Free basic mortgage calculations
Features
Read full description

返済くんシリーズ累計 20 万ダウンロード(2025/12時点)を突破! 不動産仲介・住宅営業マンの商談を劇的に速くする、現場第一主義のローン計算ツールが大幅進化しました。 ◆◇ Version 4.0 のお知らせ ◇◆ 以前の無料版(Jr版)では制限されていた「元金均等返済」や「2段階金利」、「詳細な利息割合表示」に加え、年収を入力しての「返済比率」「借入可能額の計算」「借入額からの必要年収の計算」などが**【完全無料】**で制限なく使えるようになりました! さらに、プロ向け機能がすべて試せる「14日間の無料お試し」もスタート。 ■ サブスクリプション制として導入したのは「真の効率化」です (※最初の14日間はすべて無料でお試しいただけます!) 1分1秒を争う接客の現場で、1,000万円や100万円単位の入力をボタン一つで完了させる圧倒的なスピード。 そして、プロのこだわりに応える金利の微調整機能。 「道具」としての使い心地にこだわるプロの方々には、このストレスフリーな操作感をサブスクリプションで。 はじめて住宅ローンを組まれるお客様や、じっくり計算したい一般の方には、基本機能をすべて無料でお使いいただけるよう設計を見直しました。 1. 煩わしい数字入力を「ゼロ」へ 商談中に一番時間がかかる「数字の打ち込み」を排除。 1,000万円単位、100万円単位、年収100万円単位などのクイックボタンにより、指先一つで一瞬にして条件入力が完了します。 2. 金利の「超」微調整(▲▼ボタン) ボタンを短押しで0.1%、長押しで0.01%刻みの調整が可能。 設定画面で自分好みの加減値にカスタマイズでき、他社との差別化やシビアな金利提案もスマートに行えます。 3. プロのこだわりに応えるカスタマイズ性能 • 銀行ごとに異なる「返済比率表」の任意設定・瞬時切替 • 返済比率計算用金利(審査金利)の個別設定 • 他借入年間返済額を合算した高度な審査シミュレーション ■ ずっと無料で使える基本機能 • 住宅ローン計算:元利均等返済(毎月・ボーナス併用・2段階金利)、元金均等返済 • 詳細表示:総返済額、利息合計、利息割合の算出 • 資金計画の逆算:返済比率、必要最低年収、借入可能額の算出 ◆ 14日間の無料お試しについて アプリをインストール(またはアップデート)してから最初の14日間は、強力な入力支援機能を含む「Pro版」の全機能を**【完全無料】**でお試しいただけます。 ※期間終了後に自動でお金が引き落とされることは一切ありません。 15日目以降も継続して入力支援ボタン等をご利用になる場合のみ、ご自身の操作でアップグレード(3ヶ月100円 / 月額換算 約33円など)をお願いいたします。 ※購読の管理や解約はApple IDの設定からいつでも行えます。 ■ 返済くんシリーズについて 本アプリは、不動産仲介、住宅メーカー、金融関係の営業担当者が、現場で本当に欲しいと思える業務ソフトを心がけて個人開発しています 。 機能の追加要望などがございましたら、ぜひお気軽にサポートメール(gg41124@gmail.com)までご連絡ください 。 ※【利用規約(EULA)】https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Simple

Easily calculate monthly loan payments and total repayment amounts. Supports bonus payments and offers two repayment methods: equal installments or equal principal payments. View and save repayment simulations in a history list.

Highlights
  • Calculate monthly payments
  • Calculate total repayment
  • Support bonus payments
  • Select repayment methods
  • Simulate repayment status
  • Save calculation history
Features
Read full description

Enter the loan amount, interest rate, and repayment period, and see your monthly payment, total repayment, and the total interest you will pay — all updated as you type. Works for mortgages, auto loans, student loans, and more, with both equal-payment and equal-principal repayment methods. ■ Compare two loans (Premium) Is the lower rate with a longer term from Bank A better than the shorter term from Bank B? Pick two saved loans, and the app tells you in plain words how they differ in first monthly payment, total interest and payoff date, for example "Bank B's total interest is $12,000.00 less than Bank A's." A side-by-side table of amount, rate, term and totals and a chart of both balances over time let you check the difference. ■ Features - Supports both equal payment (principal & interest) and equal principal repayment - Results update as you type. There is no "calculate" button to press - Shows the monthly payment, total repayment, and total interest together (plus the bonus-month payment when bonus repayments are on) - A breakdown bar shows the split between principal and interest at a glance - A full amortization schedule from the first payment to the last, with the principal, interest, and remaining balance for every payment - See the schedule as a chart: the principal and interest you repay each year, and how the balance goes down (Premium) - Export the schedule as a CSV file to open in Numbers or Excel (Premium) - Bonus repayments twice a year, with a choice of months and share, for the bonus payments that are customary in Japan (shown when the currency is Japanese Yen) - Choose how fractions are handled: round down, round to nearest, or round up - Save any set of conditions to your history and load it back anytime, and give it a name such as "Bank A variable" ■ Free features and Premium Calculating payments, the amortization schedule, and saving to your history are free. Comparing two loans, schedule charts, and CSV export are Premium features, unlocked with a one-time purchase (not a subscription). If you got this app before it became free, Premium is included at no extra cost. ■ Currencies Japanese Yen, US Dollar, Euro, and British Pound are supported. The app picks one for you based on your region, and you can change it at any time under Settings on the calculator screen. Amounts are rounded to the smallest unit of each currency — one yen, one cent, and so on. Changing the currency also changes the interest rate the app starts from, so the figure you see first is a realistic one for that region. ■ Requirements and support - iPhone and iPad (iOS 18 or later) - On iPad, your history and the calculator sit side by side, and you can open several windows to view different loans at once - Works alongside other apps such as Safari in Split View - Dark Mode - Dynamic Type and VoiceOver, including Audio Graphs for charts - Available in English and Japanese ■ Input ranges - Loan amount: under 10,000,000 (under 1,000,000,000 for Japanese Yen) - Annual interest rate: under 30% - Repayment period: up to 99 years and 11 months ■ Please note This app calculates estimates. Your actual payments, fees, and other costs depend on your lender and the terms of your agreement. Always confirm the figures with your lender before signing. Everything is calculated on your device and no internet connection is required (except to purchase or restore Premium). Nothing you enter and nothing in your history is sent anywhere (a CSV file leaves your device only when you choose where to share it). There is no account to create and no advertising.

Screenshots

ローン計算 @返済くんLoan4 screens
Simple4 screens

Verdict

The call

The clearest difference is update cadence: Simple at monthly against ローン計算 @返済くんLoan's every 4 months. ローン計算 @返済くんLoan's advantage is monetization model (freemium vs paid). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ローン計算 @返済くんLoan sells 2 in-app purchases, starting at $0.49 per 3 months and Simple sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ローン計算 @返済くんLoan ships an update every 4 months, Simple monthly. Both last shipped on November 1, 2026.

Scorecard2 real differences · 8 level
ローン計算 @返済くんLoan versus Simple: the parameters behind the verdict, then further details
Parameterローン計算 @返済くんLoanSimple
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings—1 — better
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size1 MB1 MB
Age rating4+4+
Developerichiro taniokaRYUICHIROU SHIMONO

Customer experience

ローン計算 @返済くんLoan

Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Simple

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

In-app purchases

2 purchases

ローン計算 @返済くんLoan

Subscriptions2
  • PRO版へアップグレード$0.493 Months
  • PRO版へアップグレード$1.991 Year
1 purchases

Simple

One-time1
  • LoanCalc Premium$2.99

Questions

Is ローン計算 @返済くんLoan free?
ローン計算 @返済くんLoan is free to download, with in-app purchases available.
Is Simple free?
Simple is free to download, with in-app purchases available.
Do ローン計算 @返済くんLoan or Simple have ads?
Neither ローン計算 @返済くんLoan nor Simple shows ads.
Which is updated more often, ローン計算 @返済くんLoan or Simple?
ローン計算 @返済くんLoan ships an update every 4 months, and Simple monthly. Most recently, ローン計算 @返済くんLoan was updated on November 1, 2026 and Simple on November 1, 2026.

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