Kaeseru Loan Payoff Calculator
Daisuke Yamaguchi Finance iPhoneiPadiPod touch
Kaeseru Loan Payoff Calculator is a paid Finance app for iPhone and iPad by Daisuke Yamaguchi. Requires iOS 17.0. Updated October 23, 2026.
- Price
- 0.99 USD
- on the App Store
- Size
- 4 MB
- Age 4+
- Updated
- Oct 23
- 2026 · v1.7
Screenshots
About Kaeseru Loan Payoff Calculator
“If the rate goes up 1%, how much more do I pay each month?” “If I make a $10,000 overpayment, how much interest do I really save?” Kaeseru answers those questions in money – the exact difference between doing it and not doing it – instead of a vague chart. ■ Extra payments, answered in money Choose when and how much, and Kaeseru shows first how much interest you save and how many months sooner you are mortgage-free. It runs both options at once – keep the payment and shorten the term, or keep the term and lower the payment – so you can see which is better. Prepayment fees are subtracted too. ■ Compare up to 5 saved plans side by side (new) Fixed vs. variable, 25 vs. 30 years, a bigger deposit. Save the scenarios and compare 2–5 of them in one table: monthly payment, rate, APR, term, total cost including fees, total interest, interest share and payoff date. Every plan is shown as a difference from your baseline, and the cheapest plan is marked. Export the table as CSV or share it as text. ■ See a rate rise before it happens +0.5%, +1.0%, +2.0% and your own worst case, side by side, with the extra monthly cost of each. ■ The real rate including fees (APR) Add arrangement, broker or valuation fees and Kaeseru calculates the APR, so you can compare offers on equal terms. ■ Solve for any of the four Monthly payment, loan amount, term or rate – pick one and Kaeseru works it out from the other three. ■ Built for the United States ・US dollars, 30- and 15-year terms and APR out of the box ・Amounts in your currency to the cent, with a choice of rounding (down, half up, up) to match your lender's schedule ・Level payment (annuity) and level principal ・Terms up to 50 years (600 payments) ・Full amortization schedule, monthly or yearly, with CSV export ・Every formula shown on screen, so you can check the numbers ■ What this app never does ・No ads (no ad SDK) ・No in-app purchases or subscriptions – a single one-time purchase unlocks everything ・What you enter never leaves your device. To improve the app, only anonymous usage data (such as which screens are opened) is counted with Google Analytics (you can turn this off in Settings). Results are estimates. Actual payments depend on your lender's calculation method; always check your lender's official schedule. Kaeseru is made by Sauna Inc., Tokyo.
What’s new
Version 1.7 · Updated October 23, 2026
Minor improvements.
App privacy
The developer, Daisuke Yamaguchi, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Product Interaction
Used for: Analytics
Alternatives to Kaeseru Loan Payoff Calculator
Looking for apps like Kaeseru Loan Payoff Calculator? Here are 6 similar apps on the App Store.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Kaeseru Loan Payoff Calculator | – | 0.99 USD | October 23, 2026 | |
| 住宅ローン繰り上げ返済計算 - 金利変更・借り換え比較 | – | Free | Aug 20, 2026 | Compare |
| 住宅ローン 計算 シミュレーション - ローンチャー | – | Free | Jun 29, 2026 | Compare |
| LoanCalc - Mortgage & Loan | – | Free | Oct 18, 2026 | Compare |
| Quick Budget App | – | Free | Jul 10, 2026 | Compare |
| わたしの住宅ローン管理 | – | Free | Oct 20, 2026 | Compare |
| SMBC Token for SMAR&TS | – | Free | Apr 18, 2026 | Compare |