# my41CX vs Plus42

my41CX and Plus42 both sit at 5.0 stars, but that hides the real split: 92% of Plus42's written reviews are positive against 43% of my41CX's. Plus42 also leads on in-app purchases (none vs 3) and update cadence (weekly vs every 2 months). my41CX's advantage is price (Free vs $9.99). On rating, ads and device support there is nothing between them.

my41CX is free to download; Plus42 costs $9.99 up front. my41CX sells 3 in-app purchases, starting at $0.99 per month. Plus42 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for my41CX against 4.9 for Plus42. That said, the two scores are not equally well evidenced: Plus42 has 79 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 43% of my41CX's written reviews are positive against 92% of Plus42's.

my41CX ships an update every 2 months, Plus42 weekly. The most recent releases landed on September 26, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | my41CX | Plus42 |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/my41cx/id979041950/reviews)** | [4.9 (79 ratings)](https://appshunter.io/ios/app/plus42/id1597963622/reviews) |
| Number of ratings | 1 | **79** |
| Positive reviews | 43.4% of reviews | **92.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | — | **#195** |
| Size | 5 MB | 11 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Miroslav Perovic](https://appshunter.io/developer/400748424) | [Thomas Okken](https://appshunter.io/developer/337692632) |

## 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


### Plus42

[App page](https://appshunter.io/ios/app/plus42/id1597963622)

**Currently charting:** #195 Top Paid · Utilities (US App Store)

This advanced scientific calculator simulates the classic HP-42S RPN calculator with enhanced features. It offers algebraic expressions, unit conversions, directories for storage, a larger resizable display, financial functions, and 2D plotting with integral and root finding.

**Highlights:** HP-42S RPN calculator simulation, Algebraic expressions, Attached units and conversions, Program and variable directories, Resizable 8-row, 22-column display, Time value of money and amortization, 2D function plotting with zoom and pan

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is my41CX free?

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

### Is Plus42 free?

Plus42 costs $9.99, with no in-app purchases.

### Which has better reviews, my41CX or Plus42?

my41CX is rated higher. my41CX averages 5.0 out of 5 from 1 ratings, while Plus42 averages 4.9 from 79 ratings.

### Do my41CX or Plus42 have ads?

Neither my41CX nor Plus42 shows ads.

### Which is updated more often, my41CX or Plus42?

my41CX ships an update every 2 months, and Plus42 weekly. Most recently, my41CX was updated on September 26, 2026 and Plus42 on September 22, 2026.

---

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