# Compound Wealth Simulator — FIRE・資産形成・将来設計・実質リターン計算

> FIRE・資産形成・将来設計・実質リターン計算 (iPhone/iPad app by Kyohei Hayakawa.)

- Source: https://appshunter.io/ios/app/compound-wealth-simulator/id6763703092 (this page in markdown: same URL + `.md`)
- Developer: [Kyohei Hayakawa](https://appshunter.io/developer/1895446921)
- Category: Finance, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 15.6 · 8 MB
- Languages: English, Hindi, Japanese, Korean, Portuguese, Chinese, Spanish
- Released: 2026-05-03
- Data updated: 2026-06-26
- User reviews in markdown: https://appshunter.io/ios/app/compound-wealth-simulator/id6763703092/reviews.md

## What is Compound Wealth Simulator?

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.


## Version history (last 4 releases)

### 1.0.8 — 2026-06-11

・Fixed an issue where the default inflation rate for some currencies was not reflected on the slider.
・Improved compound interest accuracy when the contribution period is set to 0 years.
・Other minor visual refinements and UI improvements.

### 1.0.7 — 2026-05-17

What's new in Version 1.0.7

  ・Fixed an issue in the "Calculate" mode where the "Contribution period" field was not hidden after setting
  the contribution frequency to "None".
  ・Other minor visual refinements and UI improvements.

### 1.0.6 — 2026-05-17

What's new in Version 1.0.6

  ・Added "Contribution period" to the "Goal" mode (useful for cases where you stop contributing midway but let your investment continue to grow).
  ・Added "None" to the "Contribution frequency" in the "Goal" mode (allows you to simulate reaching your goal with just the initial principal).
  ・Added a slider to "Target amount" for a more intuitive setup.
  ・Added sliders for entering "Duration" and "Rate".
  ・You can now trace the "Asset growth" chart to see the duration and asset amount at any specific point.
  ・Other minor visual refinements and UI improvements.

### 1.0 — 2026-05-03

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-26.*