# RLM vs SwiftRPN

The clearest difference is in-app purchases: SwiftRPN at none against RLM's 1. RLM's advantage is update cadence (every 4 weeks vs every 14 months) and iOS requirement (15.0 vs 17.6). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for RLM against 5.0 for SwiftRPN. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

RLM ships an update every 4 weeks, SwiftRPN every 14 months. The most recent releases landed on September 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | RLM | SwiftRPN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/rlm-10cx/id6466089794/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/swiftrpn/id6470951024/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 14 months |
| Monetization | Free | — |
| Size | 6 MB | 3 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [R.L.M. Software](https://appshunter.io/developer/289639238) | [Patrick Gelvin](https://appshunter.io/developer/1573354051) |

## What reviewers say

### RLM

[App page](https://appshunter.io/ios/app/rlm-10cx/id6466089794)

This scientific calculator offers a comprehensive suite of tools for finance, business, statistics, and complex scientific calculations. It emulates a classic calculator while leveraging modern iOS device capabilities for ease of use and advanced functions.

**Highlights:** Finance and Business calculations, Date and Time interval calculations, Advanced Statistics and Curve Fitting, Complex Numbers and 3D Vectors, Unit and Currency Conversions, Equation Solver, Programmable functions

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

**In-app purchases (1)**

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


### SwiftRPN

[App page](https://appshunter.io/ios/app/swiftrpn/id6470951024)

**In-app purchases:** none


## Frequently asked questions

### Is RLM free?

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

### Is SwiftRPN free?

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

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

RLM and SwiftRPN are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do RLM or SwiftRPN have ads?

Neither RLM nor SwiftRPN shows ads.

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

RLM ships an update every 4 weeks, and SwiftRPN every 14 months. Most recently, RLM was updated on September 30, 2026 and SwiftRPN on October 24, 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.*