# ReasonML vs OCaml

The clearest difference is review sentiment: ReasonML at 100% against OCaml's 64%. ReasonML also leads on in-app purchases (none vs 3) and update cadence (every 2 days vs monthly). OCaml's advantage is ratings volume (17 vs 3). On price, ads and device support there is nothing between them.

Both are free to download. OCaml sells 3 one-off in-app purchases. ReasonML asks for nothing beyond the download.

ReasonML holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: OCaml has 17 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of ReasonML's written reviews are positive against 64% of OCaml's.

ReasonML ships an update every 2 days, OCaml monthly. The most recent releases landed on September 20, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | ReasonML | OCaml |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/reasonml/id1507769834/reviews)** | [4.6 (17 ratings)](https://appshunter.io/ios/app/ocaml-learn-and-code/id1547506826/reviews) |
| Number of ratings | 3 | **17** |
| Positive reviews | **100.0% of reviews** | 64.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 38 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Jacob Parker](https://appshunter.io/developer/1153284524) | [Groupe MINASTE](https://appshunter.io/developer/1378426984) |

## What reviewers say

### ReasonML

[App page](https://appshunter.io/ios/app/reasonml/id1507769834)

This app serves as a playground for ReasonML, allowing users to convert code between ReasonML and OCaml. It also compiles code to JavaScript and displays the JS console output directly within the application.

**Highlights:** ReasonML to OCaml conversion, OCaml to ReasonML conversion, Compile to JavaScript, View JS console output

**Features:** Vision Pro support

**In-app purchases:** none


### OCaml

[App page](https://appshunter.io/ios/app/ocaml-learn-and-code/id1547506826)

Learn and practice OCaml programming with an integrated editor and interactive top-level interpreter. This app provides offline functionality and step-by-step learning modules for variables, conditions, and loops, with new content added regularly.

**Highlights:** Integrated OCaml editor, Interactive top-level interpreter, Offline code execution, Step-by-step learning chapters, Customizable editor settings, Save and open .ml files

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation 1 | $0.99 | one-time |
| Donation 2 | $2.99 | one-time |
| Donation 3 | $4.99 | one-time |


## Frequently asked questions

### Is ReasonML free?

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

### Is OCaml free?

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

### Which has better reviews, ReasonML or OCaml?

ReasonML is rated higher. ReasonML averages 5.0 out of 5 from 3 ratings, while OCaml averages 4.6 from 17 ratings.

### Do ReasonML or OCaml have ads?

Neither ReasonML nor OCaml shows ads.

### Which is updated more often, ReasonML or OCaml?

ReasonML ships an update every 2 days, and OCaml monthly. Most recently, ReasonML was updated on September 20, 2026 and OCaml on September 21, 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.*