# ReasonML

> ReasonML playground for code conversion, JS compilation, and console output viewing. (iPhone/iPad app by Jacob Parker.)

- Source: https://appshunter.io/ios/app/reasonml/id1507769834 (this page in markdown: same URL + `.md`)
- Developer: [Jacob Parker](https://appshunter.io/developer/1153284524)
- Category: Developer Tools
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.4 · 8 MB
- Languages: American English
- Released: 2020-04-13
- Data updated: 2026-08-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/reasonml/id1507769834/reviews.md

## What is ReasonML?

Playground for ReasonML

* Convert between ReasonML and OCaml
* Compile to JS
* View JS console output

## Key features

- ReasonML to OCaml conversion
- OCaml to ReasonML conversion
- Compile to JavaScript
- View JS console output

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/reasonml/id1507769834/reviews.md

### 5/5 — Great for testing Reason and OCaml ideas on the run

*2023-12-17*

This is really helpful for when I want to tinker with something small in Reason or OCaml on my phone or iPad before I get back to a bigger machine. Really simple to use and straight forward. I wouldn’t mind if some of the features of the old Raskell app were added, but this is really great as is

## Frequently asked questions about ReasonML

### What is ReasonML?

ReasonML is a JavaScript syntax extension that aims to make JavaScript more approachable by providing a powerful type system and functional programming features. This app allows you to experiment with it.

### Can ReasonML convert code to other languages besides JavaScript?

This specific application focuses on converting between ReasonML and OCaml, and compiling ReasonML to JavaScript. It does not currently support conversion to other languages.

### How does ReasonML compile to JavaScript?

ReasonML code is transpiled into JavaScript, allowing it to run in any JavaScript environment. This app provides the functionality to perform this compilation and view the resulting JS code.

### What is the purpose of viewing JS console output in ReasonML?

Viewing JS console output is crucial for debugging and understanding how your ReasonML code behaves when executed as JavaScript. This app integrates this feature for a seamless development experience.

### Is ReasonML suitable for beginners?

ReasonML's strong type system and functional paradigm can be beneficial for beginners learning programming concepts. This playground app offers a low-barrier entry point to explore its features.

### What devices does ReasonML support?

ReasonML is available on iPhone, iPad, and iPod devices, making it accessible for mobile development and learning on the go.

### How often is ReasonML updated?

The latest version of ReasonML was released on April 18, 2020, indicating a development pace that may vary. Users can expect updates based on the developer's release schedule.

### Does ReasonML have ads?

No, ReasonML does not contain advertisements, providing an uninterrupted experience for users focused on coding and development.

## Version history (last 4 releases)

### 1.3 — 2020-04-18

Console output improvements

### 1.2 — 2020-04-18

Syntax highlighting!

### 1.1 — 2020-04-15

Much nicer design
Slight performance improvements

### 1.0 — 2020-04-13

No release notes.

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## More apps by Jacob Parker

- [Za: Scrabble Word Lookup](https://appshunter.io/ios/app/za-scrabble-word-lookup/id1159847785)
- [RailApp](https://appshunter.io/ios/app/railapp/id1435522644)
- [Paper & Pen](https://appshunter.io/ios/app/paper-and-pen/id1503996216)
- [TechniCalc Calculator](https://appshunter.io/ios/app/technicalc-calculator/id1504965415)
- [Calipers Tape Measure](https://appshunter.io/ios/app/calipers-tape-measure/id6445826923)

All apps by Jacob Parker: https://appshunter.io/developer/1153284524

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*