# Stack RPN Calculator vs iHP48

The clearest difference is review sentiment: iHP48 at 88% against Stack RPN Calculator's 33%. iHP48 also leads on rating (4.7 vs 3.5) and ratings volume (270 vs 2). Stack RPN Calculator's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

iHP48 holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: iHP48 has 270 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 33% of Stack RPN Calculator's written reviews are positive against 88% of iHP48's.

## The numbers

| Metric | Stack RPN Calculator | iHP48 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/stack-rpn-calculator/id1493986697/reviews) | **[4.7 (270 ratings)](https://appshunter.io/ios/app/ihp48/id1549608953/reviews)** |
| Number of ratings | 2 | **270** |
| Positive reviews | 33.3% of reviews | **88.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | Free | Free |
| Size | 10 MB | 6 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dario Bersiga](https://appshunter.io/developer/668388549) | [Alexis Lorca](https://appshunter.io/developer/1549608955) |

## What reviewers say

### Stack RPN Calculator

[App page](https://appshunter.io/ios/app/stack-rpn-calculator/id1493986697)

This scientific calculator displays major functions on screen and utilizes a stack for calculations. It supports a stack of up to 4 values but can store many more numbers depending on device memory.

**Highlights:** Visible scientific functions, RPN (Reverse Polish Notation) input, Stack display for up to 4 values, Large number storage capacity, Designed for iPhone and iPad

**Features:** macOS Compatibility

**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 Stack RPN Calculator free?

Stack RPN Calculator 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, Stack RPN Calculator or iHP48?

iHP48 is rated higher. Stack RPN Calculator averages 3.5 out of 5 from 2 ratings, while iHP48 averages 4.7 from 270 ratings.

### Do Stack RPN Calculator or iHP48 have ads?

Neither Stack RPN Calculator nor iHP48 shows ads.

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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.*