# Command vs RPN Deck

The clearest difference is in-app purchases: Command at none against RPN Deck's 1. Command also leads on update cadence (every 5 days vs every 11 days) and device support (4 vs 1). On price and ads there is nothing between them.

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

Command ships an update every 5 days, RPN Deck every 11 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Command | RPN Deck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/command-line-calculator/id1565921216/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 11 days |
| Monetization | Free | — |
| Size | 1 MB | 2 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ketan Appa](https://appshunter.io/developer/576435759) | [Edgard Leo Berendsen Mercado](https://appshunter.io/developer/1893604343) |

## What reviewers say

### Command

[App page](https://appshunter.io/ios/app/command-line-calculator/id1565921216)

This app offers a command-line interface for performing complex calculations, including chained operations, variable assignments, and advanced mathematical functions. It supports various number bases, constants, and provides a built-in help system for ease of use.

**Highlights:** Command-line interface, Chained calculations, Variable assignment, Complex numbers, Multiple number bases, Unit and function definition, Extensive math functions

**Features:** Vision Pro support

**In-app purchases:** none


### RPN Deck

[App page](https://appshunter.io/ios/app/rpn-deck/id6796490842)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Deck | $2.99 | one-time |


## Frequently asked questions

### Is Command free?

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

### Is RPN Deck free?

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

### Do Command or RPN Deck have ads?

Neither Command nor RPN Deck shows ads.

### Which is updated more often, Command or RPN Deck?

Command ships an update every 5 days, and RPN Deck every 11 days. Most recently, Command was updated on November 3, 2026 and RPN Deck on November 6, 2026.

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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.*