# Compounder vs RLM

The clearest difference is review sentiment: RLM at 100% against Compounder's 61%. RLM also leads on rating (5.0 vs 4.8). Compounder's advantage is in-app purchases (none vs 1) and ratings volume (3.4K vs 2). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. RLM sells 1 one-off in-app purchase. Compounder asks for nothing beyond the download.

RLM holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Compounder has 3.4K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 61% of Compounder's written reviews are positive against 100% of RLM's.

Compounder ships an update every 3 weeks, RLM every 2 months. The most recent releases landed on October 17, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Compounder | RLM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (3.4K ratings)](https://appshunter.io/ios/app/compounder/id1412552240/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/rlm-ba2/id6443453491/reviews)** |
| Number of ratings | **3.4K** | 2 |
| Positive reviews | 61.4% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 3 MB | 4 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [James Bevins](https://appshunter.io/developer/1137750302) | [R.L.M. Software](https://appshunter.io/developer/289639238) |

## 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


### RLM

[App page](https://appshunter.io/ios/app/rlm-ba2/id6443453491)

This app offers a comprehensive suite of financial and business calculation tools, inspired by a popular professional calculator. It features specialized worksheets for loans, bonds, options, depreciation, and time value of money, alongside business, cash flow, statistics, and scientific functions.

**Highlights:** Finance Worksheets (Amortization, Bonds, Options), Business Calculations (Break-Even, Bill Split), Cash Flow Analysis, Statistical Functions, Scientific Calculator, Unit and Currency Conversions, Equation Solver

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Full Access | $9.99 | one-time |


## Frequently asked questions

### Is Compounder free?

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

### Is RLM free?

RLM is free to download, with in-app purchases available.

### Which has better reviews, Compounder or RLM?

RLM is rated higher. Compounder averages 4.8 out of 5 from 3.4K ratings, while RLM averages 5.0 from 2 ratings.

### Do Compounder or RLM have ads?

Neither Compounder nor RLM shows ads.

### Which is updated more often, Compounder or RLM?

Compounder ships an update every 3 weeks, and RLM every 2 months. Most recently, Compounder was updated on October 17, 2026 and RLM on September 30, 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.*