# goRPN vs Modern RPN

The clearest difference is review sentiment: Modern RPN at 100% against goRPN's 50%. Modern RPN also leads on rating (5.0 vs 3.0). goRPN's advantage is price (Free vs $2.99) and iOS requirement (9.0 vs 26.2). On ratings volume, ads, in-app purchases and device support there is nothing between them.

goRPN is free to download; Modern RPN costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Modern RPN holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 50% of goRPN's written reviews are positive against 100% of Modern RPN's.

## The numbers

| Metric | goRPN | Modern RPN |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/gorpn/id1212060693/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/modern-rpn/id6760340697/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Monetization | **Free** | Paid |
| Size | 12 MB | 2 MB |
| Requires iOS | **9.0** | 26.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joel Perry](https://appshunter.io/developer/972887837) | [Kevin Flathers](https://appshunter.io/developer/1883973737) |

## What reviewers say

### 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


### Modern RPN

[App page](https://appshunter.io/ios/app/modern-rpn/id6760340697)

A minimalist reverse Polish notation calculator for iOS devices. It offers Standard, Binary, and Hex modes for quick calculations and programmer-friendly conversions, featuring a clean interface and a 4-level stack.

**Highlights:** Reverse Polish Notation (RPN) input, Standard, Binary, and Hex modes, 4-level visible stack, Calculation history, Saved session state, Clean dark interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is goRPN free?

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

### Is Modern RPN free?

Modern RPN costs $2.99, with no in-app purchases.

### Which has better reviews, goRPN or Modern RPN?

Modern RPN is rated higher. goRPN averages 3.0 out of 5 from 1 ratings, while Modern RPN averages 5.0 from 1 ratings.

### Do goRPN or Modern RPN have ads?

Neither goRPN nor Modern RPN 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.*