# Compounder vs Compound Interest

The clearest difference is price: Compounder at Free against Compound Interest's $1.99. Compounder also leads on update cadence (every 3 weeks vs every 4 months) and ratings volume (3.4K vs 238). Compound Interest's advantage is iOS requirement (14.0 vs 16.0). On rating, review sentiment, ads and in-app purchases there is nothing between them.

Compounder is free to download; Compound Interest costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.8 for Compounder against 4.7 for Compound Interest. That said, the two scores are not equally well evidenced: Compounder has 3.4K ratings behind it against 238, so its average is the more settled of the two. Written reviews are what separate them: 60% of Compounder's written reviews are positive against 68% of Compound Interest's.

Compounder ships an update every 3 weeks, Compound Interest every 4 months. Both last shipped on September 22, 2026.

## The numbers

| Metric | Compounder | Compound Interest |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.8 (3.4K ratings)](https://appshunter.io/ios/app/compounder/id1412552240/reviews)** | [4.7 (238 ratings)](https://appshunter.io/ios/app/compound-interest-compounder/id1457510419/reviews) |
| Number of ratings | **3.4K** | 238 |
| Positive reviews | 60.0% of reviews | **67.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | Free |
| Size | 3 MB | 1 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [James Bevins](https://appshunter.io/developer/1137750302) | [TernUp LLC](https://appshunter.io/developer/1457510418) |

## What reviewers say

### 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


### Compound Interest

[App page](https://appshunter.io/ios/app/compound-interest-compounder/id1457510419)

Calculate and visualize the growth of your savings and investments over time. Explore different scenarios to understand the power of compound interest and plan for your financial goals, such as retirement.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Clean and simple design
- 🚀 Fast calculations
- 💡 Multiple tabs for different calculations
- ✨ Visually appealing interface
- 🚫 No obnoxious advertising

**What reviewers complain about**

- 🐛 App freezes frequently
- 🐛 App crashes on interaction
- 🐛 iPad version broken
- 🐛 Cannot input numbers
- 🐛 Calculations are wrong

**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

**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


## Frequently asked questions

### Is Compounder free?

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

### Is Compound Interest free?

Compound Interest costs $1.99, with no in-app purchases.

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

Compounder is rated higher. Compounder averages 4.8 out of 5 from 3.4K ratings, while Compound Interest averages 4.7 from 238 ratings.

### Do Compounder or Compound Interest have ads?

Neither Compounder nor Compound Interest shows ads.

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

Compounder ships an update every 3 weeks, and Compound Interest every 4 months. Most recently, Compounder was updated on September 22, 2026 and Compound Interest 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.*