# Simple Compound Interest vs Compounder

The clearest difference is ads: Compounder at none against Simple Compound Interest's shown. Compounder also leads on update cadence (every 3 weeks vs every 6 months) and ratings volume (3.4K vs 23). On price, rating, review sentiment and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.7 for Simple Compound Interest against 4.8 for Compounder. That said, the two scores are not equally well evidenced: Compounder has 3.4K ratings behind it against 23, so its average is the more settled of the two. Written reviews are what separate them: 56% of Simple Compound Interest's written reviews are positive against 60% of Compounder's.

Simple Compound Interest ships an update every 6 months, Compounder every 3 weeks. The most recent releases landed on August 20, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Simple Compound Interest | Compounder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (23 ratings)](https://appshunter.io/ios/app/simple-compound-interest/id1020564831/reviews) | **[4.8 (3.4K ratings)](https://appshunter.io/ios/app/compounder/id1412552240/reviews)** |
| Number of ratings | 23 | **3.4K** |
| Positive reviews | 55.6% of reviews | **60.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 5 MB | 3 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stack3](https://appshunter.io/developer/375916874) | [James Bevins](https://appshunter.io/developer/1137750302) |

## What reviewers say

### Simple Compound Interest

[App page](https://appshunter.io/ios/app/simple-compound-interest/id1020564831)

Easily calculate the future value of your investments. Input your initial capital, monthly contributions, annual interest rate, and investment duration to see your projected final return, total invested amount, and growth rate. Save multiple scenarios and view monthly progress.

**Highlights:** Calculate final return, Calculate total investment amount, Calculate return rate, Save investment conditions, Show monthly increase

**Features:** Vision Pro support

**In-app purchases:** none


### Compounder

[App page](https://appshunter.io/ios/app/compounder/id1412552240)

Calculate the growth of savings and investments using compound interest. Explore how regular contributions and withdrawals impact your financial goals over time. Designed for anyone to understand and utilize the power of compounding for wealth building.

**Highlights:** Calculate compound interest, Flexible settings, Factor in periodic withdrawals, Factor in additional contributions, Easy-to-use interface

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Instant results
- 💡 Helps explain investments
- 🚀 Simple and easy to use
- 👍 Best and easiest compound calculator

**What reviewers complain about**

- 🐛 Glitchy and not user-friendly after update
- 🐛 Can't use quarterly, monthly, or weekly buttons after update
- 🐛 New version not working well on iPhone
- 🐛 Can't click off of monthly to quarterly, yearly, or weekly
- 🐛 Compound frequency stuck on monthly after update

**Reported bugs**

- Calculation issues with initial investment
- Formatting issues on mobile devices
- Crashes after short usage

**Requested features**

- Add percentage option for withdrawal
- Allow adjusting periodic contributions (weekly, monthly, etc.)
- Include daily compounding option
- Add inflation adjustment to contributions and outputs
- Create a widget version


## Frequently asked questions

### Is Simple Compound Interest free?

Simple Compound Interest is free to download, with no in-app purchases.

### Is Compounder free?

Compounder is free to download, with no in-app purchases.

### Which has better reviews, Simple Compound Interest or Compounder?

Compounder is rated higher. Simple Compound Interest averages 4.7 out of 5 from 23 ratings, while Compounder averages 4.8 from 3.4K ratings.

### Do Simple Compound Interest or Compounder have ads?

Simple Compound Interest shows ads; Compounder does not.

### Which is updated more often, Simple Compound Interest or Compounder?

Simple Compound Interest ships an update every 6 months, and Compounder every 3 weeks. Most recently, Simple Compound Interest was updated on August 20, 2026 and Compounder on September 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*