# SwiftRPN vs Fraction Flow

The clearest difference is update cadence: Fraction Flow at every 4 days against SwiftRPN's every 14 months. Fraction Flow also leads on iOS requirement (12.0 vs 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.

SwiftRPN ships an update every 14 months, Fraction Flow every 4 days. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | SwiftRPN | Fraction Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/swiftrpn/id6470951024/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 3 MB | 28 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Gelvin](https://appshunter.io/developer/1573354051) | [John Colani](https://appshunter.io/developer/1587899971) |

## 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


### Fraction Flow

[App page](https://appshunter.io/ios/app/fraction-flow/id6742278209)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SwiftRPN free?

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

### Is Fraction Flow free?

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

### Do SwiftRPN or Fraction Flow have ads?

Neither SwiftRPN nor Fraction Flow shows ads.

### Which is updated more often, SwiftRPN or Fraction Flow?

SwiftRPN ships an update every 14 months, and Fraction Flow every 4 days. Most recently, SwiftRPN was updated on November 7, 2026 and Fraction Flow on November 8, 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.*