# i41CX+ vs RC Model Manager

The clearest difference is price: RC Model Manager at Free against i41CX+'s $24.99. RC Model Manager also leads on update cadence (every 3 days vs every 5 weeks). i41CX+'s advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.0). On ads and device support there is nothing between them.

RC Model Manager is free to download; i41CX+ costs $24.99 up front. RC Model Manager sells 2 in-app purchases, starting at $9.99 per year. i41CX+ asks for nothing beyond the download.

i41CX+ ships an update every 5 weeks, RC Model Manager every 3 days. The most recent releases landed on September 23, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | i41CX+ | RC Model Manager |
| --- | --- | --- |
| Price | $24.99 | **Free** |
| Rating | **[4.8 (106 ratings)](https://appshunter.io/ios/app/i41cx-plus/id289068865/reviews)** | — |
| Number of ratings | **106** | — |
| Positive reviews | 91.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Paid | — |
| Size | 123 MB | 80 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Antonio Lagana](https://appshunter.io/developer/289068868) | [BRANDON ELIAS CHAVEZ](https://appshunter.io/developer/1853166421) |

## What reviewers say

### i41CX+

[App page](https://appshunter.io/ios/app/i41cx-plus/id289068865)

This advanced RPN scientific calculator offers workstation-class Computer Algebra System (CAS) capabilities, going beyond traditional replicas. It provides access to an extensive library of modules and programs, enhanced with iOS features, customizable skins, and iCloud support for seamless data management.

**Highlights:** RPN logic with 4-element stack, Extensive memory registers, Over 400 built-in functions, Computer Algebra System (CAS), Virtual thermal printer/plotter, Access to HP-41 module library, Customizable skins and keyboard overlays

**In-app purchases:** none

**What reviewers like**

- 🚀 Fantastic emulation of the original HP41 calculator
- 🔒 Faithful to the original hardware and functionality
- 👍 Includes all the expansion modules and accessories
- 👍 Responsive and never crashes
- 👍 Excellent implementation of RPN and programmability

**What reviewers complain about**

- 🔋 Can drain battery when left on
- 👎 Small button size can lead to mis-taps
- 👎 Slow startup time in some versions

**Reported bugs**

- Issues with the 41Z math module producing garbled output
- Scaling problems with overlays

**Requested features**

- Landscape mode for better button size
- Haptic feedback for button presses
- Ability to load and save programs/modules via cloud/email
- Macros or scripting support


### RC Model Manager

[App page](https://appshunter.io/ios/app/rc-model-manager/id6755322456)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RC Model Manager Pro Annual | $9.99 | per year |
| RC Model Manager Pro | $9.99 | one-time |


## Frequently asked questions

### Is i41CX+ free?

i41CX+ costs $24.99, with no in-app purchases.

### Is RC Model Manager free?

RC Model Manager is free to download, with in-app purchases available.

### Do i41CX+ or RC Model Manager have ads?

Neither i41CX+ nor RC Model Manager shows ads.

### Which is updated more often, i41CX+ or RC Model Manager?

i41CX+ ships an update every 5 weeks, and RC Model Manager every 3 days. Most recently, i41CX+ was updated on September 23, 2026 and RC Model Manager on September 15, 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.*