# my41CX vs RLM

The clearest difference is rating: my41CX at 5.0 against RLM's 3.1. RLM's advantage is review sentiment (67% vs 43%) and ratings volume (7 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. my41CX sells 3 in-app purchases, starting at $0.99 per month and RLM sells 4 in-app purchases, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.

my41CX holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: RLM has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 43% of my41CX's written reviews are positive against 67% of RLM's, so the app with the better star average is not the one people write more warmly about.

my41CX ships an update every 2 months, RLM every 5 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | my41CX | RLM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/my41cx/id979041950/reviews)** | [3.1 (7 ratings)](https://appshunter.io/ios/app/rlm-11cx/id1630739014/reviews) |
| Number of ratings | 1 | **7** |
| Positive reviews | 43.4% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 5 MB | 6 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Miroslav Perovic](https://appshunter.io/developer/400748424) | [R.L.M. Software](https://appshunter.io/developer/289639238) |

## What reviewers say

### my41CX

[App page](https://appshunter.io/ios/app/my41cx/id979041950)

Experience the most accurate HP-41CX calculator emulation. This app provides full microcode-level emulation of the original NUT processor, ensuring 100% hardware-accurate behavior. It features a modern interface, expandable ROM modules, and built-in documentation for a classic yet contemporary user experience.

**Highlights:** True microcode emulation, Modern user interface, Expandable with ROM modules, Built-in documentation, 100% hardware-accurate behavior

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly Premium | $9.99 | per year |
| Unlock Full App | $19.99 | one-time |

**What reviewers like**

- 👍 Excellent emulation of HP calculators
- ✨ Faithful look and feel
- 💯 Perfect functionality
- 🚀 Works perfectly on phones/iPads
- 💡 Great for RPN calculator users

**What reviewers complain about**

- 🐛 Buggy on Mac
- 🤏 Small characters on buttons
- 🐛 Locks up when running programs
- 🐛 Crashes under iOS 13.2.3
- 🐛 Application quits after touching screen

**Reported bugs**

- Cannot enter anything via keyboard on Mac
- Locks up when running a program
- Crashes under IOS 13.2.3
- Application quits after touching screen
- Keys 'V' and 'W' inverted when ALPHA mode is switched on

**Requested features**

- Larger buttons
- Option for tactile/Haptic feedback for keys
- Option for beep sound
- Instructions for mod files
- Better Mac UI


### RLM

[App page](https://appshunter.io/ios/app/rlm-11cx/id1630739014)

This app is a scientific and programmable calculator designed for science and engineering, replicating the functionality of the HP-11C. It offers extensive features for finance, business, statistics, complex numbers, and unit conversions, with a programmable interface for custom calculations.

**Highlights:** Finance calculations (amortization, bond price, Black-Scholes), Business functions (break-even, currency exchange), Statistical analysis (regression, probability distributions), Scientific functions (complex numbers, logarithms, trigonometry), Unit and currency conversions, Programmable interface for custom scripts, Equation solver

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.49 | per month |
| Semi-Annual Subscription | $2.99 | per 6 months |
| Annual Subscription | $5.99 | per year |
| Lifetime Purchase | $9.99 | one-time |


## Frequently asked questions

### Is my41CX free?

my41CX is free to download, with in-app purchases available.

### Is RLM free?

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

### Which has better reviews, my41CX or RLM?

my41CX is rated higher. my41CX averages 5.0 out of 5 from 1 ratings, while RLM averages 3.1 from 7 ratings.

### Do my41CX or RLM have ads?

Neither my41CX nor RLM shows ads.

### Which is updated more often, my41CX or RLM?

my41CX ships an update every 2 months, and RLM every 5 weeks. Most recently, my41CX was updated on October 23, 2026 and RLM 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.*