# RPN vs goRPN

The clearest difference is review sentiment: goRPN at 50% against RPN's 0%. goRPN also leads on in-app purchases (none vs 1) and iOS requirement (9.0 vs 17.0). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. RPN sells 1 one-off in-app purchase. goRPN asks for nothing beyond the download.

## The numbers

| Metric | RPN | goRPN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/gorpn/id1212060693/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | Free | Free |
| Size | 5 MB | 12 MB |
| Requires iOS | 17.0 | **9.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tomas Stankiewicz Baldassarri](https://appshunter.io/developer/452519243) | [Joel Perry](https://appshunter.io/developer/972887837) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn/id452519240)

This utility app functions as a reverse Polish notation calculator. Users input numbers and operations using a stack-based interface to perform calculations. It's designed for straightforward mathematical tasks.

**Highlights:** Reverse Polish Notation (RPN) input, Stack-based operation, Intuitive digit and operation buttons, Clear result display

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack LCD | $0.49 | one-time |


### goRPN

[App page](https://appshunter.io/ios/app/gorpn/id1212060693)

This app emulates the functionality of the HP-16C calculator using a Reverse Polish Notation (RPN) input method. It is a minimal, open-source utility designed for users familiar with RPN calculators.

**Highlights:** RPN calculator, HP-16C stack emulation, Open-source software, Minimalist design, Future functionality expansion

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

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

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

### Is goRPN free?

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

### Do RPN or goRPN have ads?

Neither RPN nor goRPN 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.*