# SwiftRPN vs Alpha Translit Keyboard

The clearest difference is in-app purchases: SwiftRPN at none against Alpha Translit Keyboard's 2. Alpha Translit Keyboard's advantage is update cadence (every 5 weeks vs every 14 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Alpha Translit Keyboard sells 2 one-off in-app purchases. SwiftRPN asks for nothing beyond the download.

SwiftRPN ships an update every 14 months, Alpha Translit Keyboard every 5 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SwiftRPN | Alpha Translit Keyboard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/swiftrpn/id6470951024/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 3 MB | 18 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Gelvin](https://appshunter.io/developer/1573354051) | [Akira Miyazawa](https://appshunter.io/developer/6784975720) |

## What reviewers say

### SwiftRPN

[App page](https://appshunter.io/ios/app/swiftrpn/id6470951024)

This utility app provides a powerful Reverse Polish Notation (RPN) calculator with advanced features. It supports scalar types, vectors, and matrices, along with extensive built-in operators and unit conversions. Easily switch between number bases and visualize results.

**Highlights:** RPN stack for efficient calculations, Support for scalar, vector, and matrix types, 84 built-in operators with documentation, 74 built-in units for conversion, Multiple number base input and output (binary, octal, decimal, hex), BigInt support for integer calculations

**In-app purchases:** none


### Alpha Translit Keyboard

[App page](https://appshunter.io/ios/app/alpha-translit-keyboard/id6784975718)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support | $2.99 | one-time |
| Support+ | $9.99 | one-time |


## Frequently asked questions

### Is SwiftRPN free?

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

### Is Alpha Translit Keyboard free?

Alpha Translit Keyboard is free to download, with in-app purchases available.

### Do SwiftRPN or Alpha Translit Keyboard have ads?

Neither SwiftRPN nor Alpha Translit Keyboard shows ads.

### Which is updated more often, SwiftRPN or Alpha Translit Keyboard?

SwiftRPN ships an update every 14 months, and Alpha Translit Keyboard every 5 weeks. Most recently, SwiftRPN was updated on October 27, 2026 and Alpha Translit Keyboard on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*