# Compounder — A compound interest calculator

> Compound interest calculator for financial planning and early retirement. (iPhone/iPad app by Adam Maliborski.)

- Source: https://appshunter.io/ios/app/compounder/id1610065816 (this page in markdown: same URL + `.md`)
- Developer: [Adam Maliborski](https://appshunter.io/developer/1609938867)
- Category: Finance, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 24 MB
- Languages: American English
- Released: 2022-03-18
- Data updated: 2026-08-21
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/compounder/id1610065816/reviews.md

## What is Compounder?

Calculate compound interest with ease using the Compounder Tool. This is a smooth and intuitive compound interest calculator (aka FIRE Calculator) that helps you calculate and plan out your future earnings so you can achieve Financial Independence and Retire Early. Start planning to stop working today.

Without a doubt, compounding interest is the most important concept to know to help you achieve financial independence earlier. At its most basic, compounding interest is a money multiplier. It is the money you earn for free from your money and is a key cornerstone in being financially independent.
 
Everyone can take advantage of compounding interest, and you can start immediately. For example, let’s say you invest $100 each month with a 10% overall return each year (compounding quarterly). After 30 years, you’ll have saved $36,000. How much money do you think you would have earned from compounding interest? $60,000? $80,000? You earned over $180,000; making your total savings of $36,000 worth over $220,000 at the end of the 30 years (more than 6 times the amount you had saved).

The Compounder calculator allows you to not only plan and calculate long and short-term savings potential, but also theory craft the impact of a flat taxation rate and inflation on your retirement goals.

Features included:
- Calculate the amount of money you could accumulate with your compound interest based investment
- Yearly interest rate up to 100%
- Multiple options for compounding frequency (daily, two-weekly, monthly, quarterly, 6-monthly, yearly)
- Multiple options for duration of your investment (daily, weekly, monthly, yearly) to account for a broader range of investment avenues, including crypto
- Unlike most other compound interest calculators, the Compounder includes both deposit and withdrawals in the one calculation to give a more complete picture of your finances
- Display graph and detailed table view
- Advanced settings include:
•	the ability to pre-set a starting figure.
•	enter a basic (flat) tax rate, with an option for a tax-free threshold.
•	set inflation to apply to your withdrawals.
- Basic formula explanations included

## Key features

- Compound interest calculation
- Variable compounding frequency
- Deposit and withdrawal tracking
- Tax and inflation impact analysis
- Graph and table visualizations
- Customizable starting figures

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/compounder/id1610065816/reviews.md

### 5/5 — Motivation in an app!

*2023-10-17, version 1.0.3*

This app actually gave me the motivation I needed to finally invest my savings. I love playing around with the graph to see how much a small change in monthly contributions makes a huge difference long-term and it really helped me refocus on my financial goals. I even used it to explain compounding interest to my two teenagers and (small miracle!) they now see the benefit in saving and investing in the future rather than spending all their money on “stuff”. 

This is a really easy and simple tool to help improve financial literacy, understand the benefits of long-term investment and compounding interest, and definitely motivated me to double my own efforts to achieve. Would definitely recommend and it might motivate you as much as it did for me!

### 5/5 — Great App!

*2022-06-10, version 1.0.1*

This is such a good compound interest calculator. Good options for customization and a nice UI.

### 5/5 — Excellent!!!

*2022-03-19, version 1.0.0*

The app works perfectly, and I especially appreciate the advanced settings for tax consideration.

## Frequently asked questions about Compounder

### What is Compounder?

Compounder is a compound interest calculator designed to help users plan their future earnings and achieve financial independence. It allows for detailed calculations including taxes and inflation.

### How does Compounder calculate compound interest?

Compounder calculates compound interest based on your initial investment, yearly interest rate, compounding frequency, and investment duration. It can also incorporate deposits and withdrawals.

### Can Compounder account for taxes and inflation?

Yes, Compounder includes advanced settings to factor in a flat tax rate with a tax-free threshold, and the impact of inflation on your withdrawals.

### What compounding frequencies does Compounder support?

Compounder offers multiple options for compounding frequency, including daily, two-weekly, monthly, quarterly, 6-monthly, and yearly.

### Does Compounder have ads?

Yes, Compounder contains advertisements to support its development and free availability.

### What devices can I use Compounder on?

Compounder is available for iPhone, iPad, and iPod devices, indicated by its support for iOS platforms.

### How often is Compounder updated?

The latest version of Compounder is 1.1.2, and it was last updated on August 25, 2025, suggesting regular updates for improvements and new features.

### Is Compounder suitable for beginners in finance?

Yes, Compounder is designed to be intuitive and includes basic formula explanations, making it accessible for beginners looking to understand compound interest.

## Version history (last 5 releases)

### 1.1.2 — 2025-08-25

Thank you for using Compounder.

This update includes general bug fixes and performance improvements.

### 1.1.1 — 2024-10-31

Thank you for using Compounder.  
In this version we addressed a series of issue related to rendering and switching between the chart and details view on this compounder results screen.

Fixed an issue relating to text size rendering. 
Adjusted the result details screen to render with larger text and also allow vertical and horizontal scrolling to all of the results can been viewed.
Adjusted the method of switching between the chart and details view on the result page to use a toggle switch instead of swiping.

### 1.1.0 — 2023-10-26

Thanks for using Compounder! This update we have added features and squashed some bugs to make the app even better.

The new version includes:
- deposits can now be indexed for inflation to represent wage growth over time
- settings now auto save 
- in-app purchase introduced to remove all ads

### 1.0.3 — 2023-07-17

Framework updates and minor fixes.

### 1.0.2 — 2022-10-09

With this latest release you can now share your compound calculator results with other people. The share will summarise key information for you to easily show people the power of compounding interest.

Some minor performance improvements also included in this release to improve the user experience.

## Apps similar to Compounder

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Finance Pro - Personal Finance](https://appshunter.io/ios/app/finance-pro-personal-finance/id1530689034) | 5.0 (1) | Free | Finance |
| [Compound Interest Calculator A](https://appshunter.io/ios/app/compound-interest-calculator-a/id1570910629) | 4.7 (50) | Free | Finance |
| [Investment Calculator - Calc](https://appshunter.io/ios/app/investment-calculator-calc/id1542576418) | 4.7 (1,583) | Free | Finance |
| [Compound Interest Calculator.](https://appshunter.io/ios/app/compound-interest-calculator/id1473682060) | 4.0 (8) | Free | Finance |
| [Amortization Calculator - Calc](https://appshunter.io/ios/app/amortization-calculator-calc/id1555174010) | 4.6 (796) | Free | Finance |
| [Calculator: Compound Interest](https://appshunter.io/ios/app/calculator-compound-interest/id6449918480) | 5.0 (2) | Free | Finance |

## More apps by Adam Maliborski

- [My Solitaire: Classic Cards](https://appshunter.io/ios/app/my-solitaire-classic-cards/id6443471142)
- [WriteOn](https://appshunter.io/ios/app/writeon/id6468016561)
- [Property Scout](https://appshunter.io/ios/app/property-scout/id6502817834)

All apps by Adam Maliborski: https://appshunter.io/developer/1609938867

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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 2026-08-21.*