# RPN vs iHP48

The clearest difference is update cadence: iHP48 at monthly against RPN's every 7 months. iHP48 also leads on ratings volume (302 vs 11). RPN's advantage is review sentiment (100% vs 88%) and iOS requirement (12.0 vs 15.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.7 for RPN against 4.6 for iHP48. That said, the two scores are not equally well evidenced: iHP48 has 302 ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 100% of RPN's written reviews are positive against 88% of iHP48's.

RPN ships an update every 7 months, iHP48 monthly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | RPN | iHP48 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (11 ratings)](https://appshunter.io/ios/app/rpn-70-sd/id738422213/reviews)** | [4.6 (302 ratings)](https://appshunter.io/ios/app/ihp48/id1549608953/reviews) |
| Number of ratings | 11 | **302** |
| Positive reviews | **100.0% of reviews** | 88.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Monthly** |
| Monetization | Free | Free |
| Size | 17 MB | 6 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Alexis Lorca](https://appshunter.io/developer/1549608955) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn-70-sd/id738422213)

This app is a faithful simulation of a rare 1974 financial calculator, offering all its original functions with enhanced features like more memory registers and a visual stack display. It's designed for users who appreciate vintage technology and need precise financial calculations.

**Highlights:** Photo-realistic vintage calculator design, Full HP-70 function simulation, Animated keys with sound, Enhanced stack and memory register view, Cut/copy/paste display value, Input parameter visual indicators

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

**In-app purchases:** none


### iHP48

[App page](https://appshunter.io/ios/app/ihp48/id1549608953)

This app brings the powerful HP48 calculator experience to your mobile device. It offers enhanced performance, seamless file management, and a customizable interface with support for various HP calculator models. Enjoy a familiar and convenient calculator solution without needing extra hardware.

**Highlights:** Supports HP38, HP39, HP48, HP49, HP50 calculators, Haptic feedback and customizable zoom options, Seamless file transfer via iTunes and Files app, Cloud storage integration (iCloud, OneDrive, Dropbox), Object saving/loading and copy/paste functionality, Access to calculator packages, skins, and ROMs, Internal file manager and extensible settings

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent emulation of HP48
- 👍 Familiar and nostalgic feel
- 👍 Comprehensive functionality
- 👍 Customizable skins
- 👍 Haptic feedback

**What reviewers complain about**

- 🐛 Occasional crashes or freezes
- 🐛 Missed keystrokes when typing quickly
- 🐛 Blank or flickering display
- 🐛 Compatibility issues with newer iOS versions

**Reported bugs**

- Crashes on startup
- Inability to save state across sessions
- Incompatibility with certain iOS devices

**Requested features**

- Dark mode option
- Ability to disable haptic feedback
- Support for HP50G emulation
- Improved keyboard mapping and arrow key functionality


## Frequently asked questions

### Is RPN free?

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

### Is iHP48 free?

iHP48 is free to download, with no in-app purchases.

### Which has better reviews, RPN or iHP48?

RPN is rated higher. RPN averages 4.7 out of 5 from 11 ratings, while iHP48 averages 4.6 from 302 ratings.

### Do RPN or iHP48 have ads?

Neither RPN nor iHP48 shows ads.

### Which is updated more often, RPN or iHP48?

RPN ships an update every 7 months, and iHP48 monthly. Most recently, RPN was updated on November 1, 2026 and iHP48 on November 3, 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.*