# Interest Calculator - Compound — Compound Interest & ROI

> Compound interest calculator with customizable periods, taxes, and visual investment breakdowns. (iPhone/iPad app by Jose Miguel Varela Marcos.)

- Source: https://appshunter.io/ios/app/interest-calculator-compound/id1578162162 (this page in markdown: same URL + `.md`)
- Developer: [Jose Miguel Varela Marcos](https://appshunter.io/developer/1523027791)
- Category: Utilities, Finance
- Price: Free with in-app purchases
- Rating: 4.83/5 from 114 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 38 MB
- Languages: English
- Released: 2021-08-12
- Data updated: 2026-06-11
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/interest-calculator-compound/id1578162162/reviews.md

## What is Interest Calculator?

Compound Interest Calculator — Investment & Savings Planner

The most complete compound interest calculator for personal finance, savings goals, and DeFi investments. Plan your financial future with precision using advanced tools that go far beyond a basic calculator.

Why Compound Interest Calc?

Whether you're building a retirement fund, planning long-term savings, or analyzing DeFi yields, this app gives you the clarity and control to make smarter financial decisions. Simulate real-world scenarios with taxes, inflation, contributions, and withdrawals—all in one place.

Powerful Calculation Engine
- Compound interest with fully customizable periods: years, months, weeks, days, or even 6-month intervals.
- Single or multiple tax brackets, including wealth tax integration.
- Advanced contributions and withdrawals with flexible scheduling.
- Inverse ROI calculator: input your initial investment, final balance, and duration to find your real rate of return.

Save, Compare & Analyze Scenarios
- Save unlimited investment scenarios and compare them side by side.
- Sensitivity analysis: instantly see how ±10-20% variations in rate, contributions, or duration affect your final balance.
- Make data-driven decisions before committing your money.

Professional Charts & Visualizations
- Pie chart: clear breakdown of principal, profits, and taxes.
- Simple vs. Compound Interest growth comparison.
- Tax vs. Inflation impact over time.
- Purchasing power chart: see how inflation erodes your real returns.

Detailed Period-by-Period Breakdown
- Track opening balance, contributions, interest earned, withdrawals, taxes, and cumulative profit for every single period.
- Export everything as a professional PDF report to share with your advisor or keep for your records.

Built for Serious Investors
- Supports decimal precision for accurate DeFi and crypto yield calculations.

Download now and take the guesswork out of compound interest. Your future self will thank you.

## Key features

- Customizable periods (years, months, weeks, days)
- Single or multiple tax rate calculations
- Visual charts (pie, line, tax vs. inflation)
- Period-by-period breakdown
- Inverse calculations for ROI
- PDF report generation
- Companion web version

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| No ads | $4.99 | one-time |


## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/interest-calculator-compound/id1578162162/reviews.md

### 1/5 — Crashes constantly

*2024-08-28, version 1.1.2*

Any number over 10 figures crashes the app and gives error messages.

### 2/5 — No Support for Decimal Places?

*2024-01-27, version 1.0.8*

Maybe I’m doing something wrong but it seems like the app only allows for integer values and not float in the calculation.  E.g.  I’d like to calculate 4.25% vs. 4.5%.  

Other wise the interface and options seem nice.

### 5/5 — Good, but

*2023-10-12, version 1.0.4*

Why can’t I start with 0?

### 4/5 — Great, but…

*2022-12-05*

Needs to calculate for full decimal places. Only gives returns in 100s (eg 53.2k instead of 53,275).

**Developer response:** Thank you very much for the feedback!


Inside the app if you long press on some values, it will show you the complete value with decimals.
We've improved this in the latest version. Now the PDF will show up to 2 decimals.

### 5/5 — Fx

*2022-09-03, version 1.0.4*

Best commission calculator ever

### 4/5 — Well designed, good features

*2022-05-20*

This is a well designed app that unlike similar apps allows you to include inflation and taxation into your calculations.

Of course, you could just deduct those amounts from your expected return if you’re calculating annually.

One problem with the app is it pushes Google advertising. Would have been better, 5 stars,  if you had the option of upgrading to an ad-free version for a few dollars.

**Developer response:** We are glad you like it and we really appreciate your feedback. Since v1.1.0 there is an option to support developers and remove ads.

### 5/5 — Best Compound Calculator Hands Down!

*2022-04-06, version 1.0.4*

This is the one you want it looks and works great even creates pdf file! 👍🤗🚀🖖

### 5/5 — Best app

*2022-02-17, version 1.0.4*

I went through a few apps and NONE of them have all the options you can do with this app. I love it, super surprised it doesn’t have more reviews

### 5/5 — Great app to understand inflation

*2021-09-06, version 1.0.4*

Really cool app to better understand inflation and compounding interest.

## Frequently asked questions about Interest Calculator

### What is the age rating for Interest Calculator - Compound?

Interest Calculator - Compound has an age rating of 4+. This means it is suitable for a wide range of users, including children, and does not contain content typically considered inappropriate for younger audiences.

### How often is Interest Calculator - Compound updated?

The latest version of Interest Calculator - Compound is 1.2.3, and it was last updated on August 11, 2025. This indicates a recent update, suggesting ongoing development and support for the application.

### What devices can I use Interest Calculator - Compound on?

Interest Calculator - Compound is available on iPhone, iPad, and iPod. This broad compatibility ensures users can access its financial calculation features across various Apple devices.

### What kind of reports can I generate with Interest Calculator - Compound?

Interest Calculator - Compound allows you to generate professional PDF reports summarizing your calculations. These reports can be easily shared, providing a clear overview of your investment scenarios and projected outcomes.

### Does Interest Calculator - Compound offer a web version?

Yes, Interest Calculator - Compound provides a companion web portal accessible from your PC. A link to this web version is available within the app, offering an alternative way to manage your financial calculations.

### What makes the charts in Interest Calculator - Compound useful?

The app features a pie chart for investment, profit, and tax breakdown, a line chart comparing simple vs. compound interest, and a tax vs. inflation chart. These visuals help users understand the nuances of their returns and the impact of external factors.

### Can I calculate ROI using inverse calculations in Interest Calculator - Compound?

Yes, Interest Calculator - Compound supports inverse calculations. You can determine the real ROI by inputting your initial investment, final balance, or duration, providing flexibility in analyzing your investment performance.

### What are the in-app purchase options for Interest Calculator - Compound?

While the app is free to download and use, it offers in-app purchases. Specific details on what these purchases unlock are not provided, but they are part of the monetization strategy alongside ads.

## Version history (last 5 releases)

### 2.1.1 — 2026-05-20

Improved translations.

### 2.1.0 — 2026-05-18

• New cash flow chart.
• Improved user interface.
• Enhanced advanced contributions.
• Improved PDF reports.
• Minor bug fixes and performance improvements.

### 2.0.1 — 2026-05-06

- New: Save and compare scenarios
- New: Sensitivity analysis (calculate ±10-20% variations)
- New: Wealth tax integration
- New: Improved advanced withdrawals logic
- New: Purchasing power over time chart
- New: Enhanced UI
- Fix: Timeframe synchronization for duration and ROI
- Fix: Increased decimal support in input fields
- Fix: Support for 6-month periods
- Fix: Multi-period calculation logic
- Minor bugfixes

### 1.2.4 — 2026-04-07

Minor bugfixes

### 1.2.3 — 2025-08-11

Fixes bug with large balances and delivers significant performance improvements

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## More apps by Jose Miguel Varela Marcos

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All apps by Jose Miguel Varela Marcos: https://appshunter.io/developer/1523027791

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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 2026-06-11.*