# goRPN vs Calccis

The clearest difference is iOS requirement: goRPN at 9.0 against Calccis's 17.6. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | goRPN | Calccis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/gorpn/id1212060693/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | Free | — |
| Size | 12 MB | 1 MB |
| Requires iOS | **9.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joel Perry](https://appshunter.io/developer/972887837) | [Jukka Aittola](https://appshunter.io/developer/1676073314) |

## 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


### Calccis

[App page](https://appshunter.io/ios/app/calccis/id6446233205)

**In-app purchases:** none


## Frequently asked questions

### Is goRPN free?

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

### Is Calccis free?

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

### Do goRPN or Calccis have ads?

Neither goRPN nor Calccis 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.*