# Python IDE & Jupyter vs ReasonML

The clearest difference is review sentiment: ReasonML at 100% against Python IDE & Jupyter's 59%. ReasonML also leads on in-app purchases (none vs 1) and update cadence (every 2 days vs monthly). Python IDE & Jupyter's advantage is ratings volume (1.1K vs 3) and chart position (#124 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. Python IDE & Jupyter sells 1 one-off in-app purchase. 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: Python IDE & Jupyter has 1.1K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 59% of Python IDE & Jupyter's written reviews are positive against 100% of ReasonML's.

Python IDE & Jupyter ships an update monthly, ReasonML every 2 days. The most recent releases landed on October 10, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Python IDE & Jupyter | ReasonML |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (1.1K ratings)](https://appshunter.io/ios/app/python-ide-and-jupyter-juno/id1462586500/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/reasonml/id1507769834/reviews)** |
| Number of ratings | **1.1K** | 3 |
| Positive reviews | 58.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Freemium | **Free** |
| Best chart rank | **#124** | — |
| Size | 991 MB | 8 MB |
| Requires iOS | 17.0 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rational Matter Ltd](https://appshunter.io/developer/1315744136) | [Jacob Parker](https://appshunter.io/developer/1153284524) |

## What reviewers say

### Python IDE & Jupyter

[App page](https://appshunter.io/ios/app/python-ide-and-jupyter-juno/id1462586500)

**Currently charting:** #124 Top Free · Developer Tools (US App Store)

This app provides a full-featured Python coding environment for mobile devices. It supports both Python scripts and Jupyter notebooks, offering offline execution, code completion, and access to popular data science libraries.

**Highlights:** Python script and Jupyter notebook support, Offline code execution, Code completion and console, File and folder navigation, Data science library integration, Package management

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Juno Pro Unlock | $39.99 | one-time |

**What reviewers like**

- 🚀 Powerful Python app for iPhone and iPad
- 🚀 Excellent for data science and machine learning
- 🚀 Impressive Jupyter notebook performance
- 👍 Sleek and elegant interface
- 👍 Convenient for on-the-go coding

**What reviewers complain about**

- 🔒 Requires paid subscription to access full functionality
- 🐛 Crashes frequently, especially when switching apps
- 🐛 Buggy behavior with external file storage
- 🐛 Inability to install many required packages
- 🐛 Outdated Python version (3.6)

**Reported bugs**

- Crashes when running certain code or opening files
- Unreliable file management and syncing
- Compatibility issues with newer iOS versions

**Requested features**

- Add support for more Python libraries and frameworks (e.g., TensorFlow, Keras, Scikit-learn)
- Improve integration with external file storage (Google Drive, Dropbox, etc.)
- Implement cell collapsing and text size adjustment
- Add an interactive REPL terminal


### 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


## Frequently asked questions

### Is Python IDE & Jupyter free?

Python IDE & Jupyter is free to download, with in-app purchases available.

### Is ReasonML free?

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

### Which has better reviews, Python IDE & Jupyter or ReasonML?

ReasonML is rated higher. Python IDE & Jupyter averages 4.6 out of 5 from 1.1K ratings, while ReasonML averages 5.0 from 3 ratings.

### Do Python IDE & Jupyter or ReasonML have ads?

Neither Python IDE & Jupyter nor ReasonML shows ads.

### Which is updated more often, Python IDE & Jupyter or ReasonML?

Python IDE & Jupyter ships an update monthly, and ReasonML every 2 days. Most recently, Python IDE & Jupyter was updated on October 10, 2026 and ReasonML on September 20, 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.*