# Compound Interest - Compounder — Your Future Money

> Compound interest calculator to visualize savings growth and plan financial goals. (iPhone/iPad app by TernUp LLC.)

- Source: https://appshunter.io/ios/app/compound-interest-compounder/id1457510419 (this page in markdown: same URL + `.md`)
- Developer: [TernUp LLC](https://appshunter.io/developer/1457510418)
- Category: Finance, Utilities
- Price: $1.99
- Rating: 4.70/5 from 238 App Store ratings · 31 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 1 MB
- Languages: American English
- Released: 2019-03-28
- Data updated: 2026-08-27
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/compound-interest-compounder/id1457510419/reviews.md

## What is Compound Interest?

Unlock the Power of Compound Interest: See Your Money Grow Over Time

Ever wondered how much your savings could grow if you started investing today? With Compound Interest, you can instantly see the impact of saving and investing on your future wealth.

Start Saving Early and Watch Your Money Grow

What if you started saving for retirement at just 15 instead of 40? By contributing just $100 a week with a 7% return, you could accumulate over $2 million by the time you retire. You may wonder: "How is that possible when I’m only saving $260,000?" The answer lies in the power of compound interest. While your direct savings would total just over $250,000, the additional $2 million comes from the growth of your investments over time. Impressive, right?

Reach Your Retirement Goals with Ease

Already have a target in mind? You can easily adjust the settings to calculate your required contribution, desired return rate, or even the time frame needed. For example, if your goal is to retire with $5 million but you're unsure how much to save each month, simply switch to the "solve for contribution" mode, and the app will automatically calculate the amount you need to save to reach your goal.

Key Features:

Visualize Your Future: Easily calculate how your savings or investments could grow over the next 30 years (or more) with interactive graphs that break down your gains year by year.
Plan for Your Goals: Want to retire a millionaire? Set your target goal, and let the app calculate how much you need to save each month, the return rate, or how long it will take to get there.
Experiment with Different Scenarios: Test different saving strategies with the option to create multiple tabs. Try saving $100/week for 10 years, then adjusting your contributions—see the real impact of compound interest!
Flexible Calculations: Whether you're solving for total balance, contribution amount, return rate, or investment length, Compound Interest makes it easy to adjust your plan and reach your financial goals.
Advanced Tab References: Link one tab's balance to another for more complex calculations. Want to try saving more for a few years and less later? It's easy to reference and compare different strategies.
Customizable Themes: Switch between light and dark modes to suit your style.
Why You'll Love It:

See exactly how compound interest works and how small changes in saving habits can lead to huge financial gains.
Perfect for retirement planning, saving for big goals, or simply exploring the magic of compounding.
Simple, intuitive design for easy use no matter your financial knowledge.
Start planning today, and watch your future wealth grow with Compound Interest!

## Key features

- Visualize savings growth with interactive graphs
- Calculate required contributions for financial goals
- Experiment with different saving scenarios
- Flexible calculations for balance, contribution, or time
- Link tabs for complex strategy comparisons
- Customizable light and dark themes

## Chart rankings

- #200 in Top Paid · Finance (US App Store)

## What do users think of Compound Interest?

Overall sentiment: mixed

**Pros**

- 👍 Clean and simple design
- 🚀 Fast calculations
- 💡 Multiple tabs for different calculations
- ✨ Visually appealing interface
- 🚫 No obnoxious advertising
- 🚀 Quick and easy to use
- ✨ Dark and light mode options
- 🚀 Smooth app response
- 📊 Graph and breakdown of gains
- 💾 Tabs remain open after closing app

**Cons**

- 🐛 App freezes frequently
- 🐛 App crashes on interaction
- 🐛 iPad version broken
- 🐛 Cannot input numbers
- 🐛 Calculations are wrong
- 🐛 No inflation option
- 🐛 No negative contribution option
- 🐛 Cannot adjust for months instead of years
- 🐛 Cannot enter length in months
- 🐛 No withdrawal function

**Commonly reported bugs**

- App keeps freezing
- App freezes when changing initial amount
- App crashes when tapping screen
- iPad version doesn't register changes
- iPad version resets starting balance to zero
- Cannot input any numbers
- Calculations are wrong
- No function for withdrawals

**Most requested features**

- Add annual lump sums
- Solve for required opening balance
- Save financial models with names
- Ability to adjust for months instead of years
- Enter length in months
- Include savings withdrawal mode
- Option to see second and third graph showing +/- interest rate
- Name the tabs
- Custom-label each tab
- Ability to share calculations
- Option to change compound rate (daily, weekly, etc.)

## Recent user reviews (10 of 31)

All indexed reviews: https://appshunter.io/ios/app/compound-interest-compounder/id1457510419/reviews.md

### 5/5 — ❤️‍🔥💔💵💵😳😳😳💵👆😅😅🥲🤣😅🥲🥲🥲🥲

*2026-05-30, version 1.3.1*

Tung tung shaar

### 1/5 — Withdrawal mode

*2026-05-16, version 1.3.1*

There’s no function for withdrawals

### 4/5 — Nice app

*2024-02-28*

Nice app and starting one tab’s balance from another tab is nice.

It would be great to be able to:
-add annual lump sums in addition to the monthly contributions, to account for bonuses
-solve for the required opening balance

### 1/5 — App keeps freezing

*2024-02-17, version 1.3.0*

The app freezes every time I attempt to change the initial amount

### 1/5 — Compound Monthly

*2023-06-30, version 1.3.0*

Can’t get the app to give me monthly calculations….PLEASE HELP

### 5/5 — Nicest Savings Calc Out there

*2023-05-07, version 1.3.0*

The calculator does quick simple calculations but it also looks the best out of many ive tried. The outputs are labeled clearly and displayed in nice cards. One suggestion that would enhance the simplicity and speed of inputting values is a slider to increment/decrement the numbers that way the user does not have have to wait for the keyboard to pop up and erase the old values. Otherwise a great implementation of a calc.

### 5/5 — Good App

*2023-03-04, version 1.3.0*

Good App. Would like to see a feature to save the financial model with name instead of “A”, “B” etc.

### 1/5 — Broken App

*2023-02-08, version 1.3.0*

This app used to work. Now when I click it, and it opens up, the screen is frozen and when I tap the screen the app crashes. 
This app literally does nothing now.

### 5/5 — Very nice and simple

*2022-11-28, version 1.3.0*

I think it’s nice, but I wish that it would allow you to adjust for how many months you have to retire instead of years. Reasoning? I plan on retiring in December and seven years. So once this December passes I have to reset the years to six. And then it throws everything off.

### 4/5 — Great App!

*2022-05-10, version 1.3.0*

I like this app very much. It’s simple, uncomplicated, and effective. However, I wish I could enter length in months in addition to years. I have the need to figure out the compound interest for 30 months, and I am unable to enter 2.5 years. That would make it a 5 star app from me. Please consider adding that capability.

## Frequently asked questions about Compound Interest

### What does the Compound Interest app do?

This app helps you understand and visualize how your savings and investments can grow over time due to the power of compound interest. You can input your savings, expected return rates, and timeframes to see potential future wealth accumulation.

### What are the key features of this compound interest calculator?

Key features include interactive graphs to visualize growth, the ability to plan for specific financial goals by calculating required contributions or timeframes, and the option to experiment with various saving scenarios using multiple tabs.

### Is this app free to use?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, making it a completely free tool for users.

### Who is this app designed for?

The app is designed for anyone interested in personal finance, particularly those looking to plan for long-term goals like retirement. It's useful for individuals who want to understand how compound interest works and how small changes in saving habits can impact their future wealth.

### Can I use this app to plan for different financial goals?

Absolutely. You can set specific financial goals, such as retiring with a certain amount of money, and the app can calculate the necessary monthly contributions, return rates, or time needed to achieve them. You can also experiment with different saving strategies to see their impact.

## Version history (last 5 releases)

### 1.3.1 — 2025-04-07

Bug fixes and improvements

### 1.3.0 — 2022-04-06

Tab References:
You can now reference one tab's total balance in another's initial balance. This is great for scenarios where you want to change the contribution amount or return rate in future years. For example, you can now experiment with the scenario of contributing $500 for 10 years followed by $0 for the next 10 years, and see the effects of compound interest over a 20 year time period. To reference another tab just tap into the starting balance and you'll see a toolbar above the keyboard with tabs that can be referenced.

Negative Return Rates and Contributions:
You can now invert your return rate or contributions to make them negative.

More Tabs:
There's no longer a limit on how many tabs you can add.

Customize Currency Symbol:
It's now possible to choose a different currency symbol than the symbol defined by your device's region. Head to the settings menu to see the options.

### 1.2.0 — 2019-09-30

- Added support for light/dark mode to use system settings on iOS 13.

### 1.1.0 — 2019-07-29

With version 1.1.0 we've added some exciting new features. 
Already have an end goal in mind? Instead solve for contribution amount, return rate, or length. Want to retire with $5,000,000 but aren't sure how much you need to be saving each month to reach that goal? Switch the mode to solve for contribution amount and it will automatically calculate that number.

• Solve for Total
• Solve for Contribution Amount
• Solve for Return Rate
• Solve for Length

### 1.0.1 — 2019-03-29

- Changed the default setting to compounded annually.
- Added options to compound Quarterly and Semi Annually.
- Minor design tweaks.

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All apps by TernUp LLC: https://appshunter.io/developer/1457510418

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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 2026-08-27.*