# RPN vs Morse Code Keys

The clearest difference is device support: Morse Code Keys at 3 against RPN's 1. On price, ads, in-app purchases and iOS requirement there is nothing between them.

RPN costs $4.99 and Morse Code Keys $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | RPN | Morse Code Keys |
| --- | --- | --- |
| Price | $4.99 | $4.99 |
| Rating | **[4.9 (11 ratings)](https://appshunter.io/ios/app/rpn-97-pro/id816249055/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Paid | — |
| Size | 75 MB | 4 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Caesar Salad Software LLC](https://appshunter.io/developer/1249587406) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn-97-pro/id816249055)

This app simulates a legendary 1970s programmable calculator, offering advanced features for scientists and engineers. It allows users to run programs, manage virtual cards, and access hundreds of free program cards from its website.

**Highlights:** Virtual program and data cards, Virtual paper tape printer, Database-driven card manager, Create, label, and organize unlimited cards, Effortless saving of card collections, Formatted program listings, Live display of stack and registers

**Features:** macOS Compatibility

**In-app purchases:** none


### Morse Code Keys

[App page](https://appshunter.io/ios/app/morse-code-keys-audio/id1627641475)

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

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

RPN costs $4.99, with no in-app purchases.

### Is Morse Code Keys free?

Morse Code Keys costs $4.99, with no in-app purchases.

### Do RPN or Morse Code Keys have ads?

Neither RPN nor Morse Code Keys 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.*