Carnets vs ReasonML
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Carnets
This app offers a standalone Jupyter notebook environment for creating and running code snippets, combining them with text and Markdown. It includes pre-installed scientific packages and allows for offline use, making it ideal for education and research.
- Standalone Jupyter notebook implementation
- Embedded Python interpreter
- Offline functionality
- Pre-installed scientific packages
- Supports Jupyterlab
- Package installation via %pip
- Notebook sharing and opening
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Jupyter notebooks are a powerful tool used in education and research. You can write small snippets of Python code and observe the result on screen, combine with paragraphs of text, using Markdown. Carnets provides a complete, stand-alone, implementation of Jupyter notebooks. Everything runs on your device, using the embedded Python interpreter; you do not need an internet connection. You can chose between Jupyter notebooks and the more advance Jupyterlab using Settings. Numpy, Sympy, Matplotlib, Pandas, lxml, bokeh, nbextensions (including ipywidgets) and many other packages are pre-installed. To see the full list of installed packages, type "%pip list" in a code window. You can add more packages using "%pip install packageName", but only if they are pure Python. If you need scipy, seaborn or scikit-learn, please use our other App, "Carnets - Jupyter (with scipy)". You can share your notebooks with other apps and also open notebooks or directories managed by other apps. Partial list of installed packages: astropy, babel, bokeh, cryptography, cvxopt, Fiona, geopandas, geopy, lxml, matplotlib, numpy, openCV, pandas, pillow, pyFFTW, pyproj, rasterio, regex, shapely, sympy, wordcloud.
ReasonML
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.
- ReasonML to OCaml conversion
- OCaml to ReasonML conversion
- Compile to JavaScript
- View JS console output
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Playground for ReasonML * Convert between ReasonML and OCaml * Compile to JS * View JS console output
Screenshots
Verdict
The clearest difference is update cadence: ReasonML at every 2 days against Carnets's monthly. ReasonML also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 78%). Carnets's advantage is ratings volume (316 vs 3) and chart position (#77 vs unranked). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ReasonML holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Carnets has 316 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 78% of Carnets's written reviews are positive against 100% of ReasonML's.
Carnets ships an update monthly, ReasonML every 2 days. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.
| Parameter | Carnets | ReasonML |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (316 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 78.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 316 — better | 3 |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #77 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.4 — better |
| Further details — not scored | ||
| Size | 1.4 GB | 8 MB |
| Age rating | 17+ | 4+ |
| Developer | Nicolas Holzschuch | Jacob Parker |
Customer experience
Carnets
ReasonML
Bugs and requests
Carnets
Reported bugs
4 issues- Crashes and freezes
- Issues with saving and loading notebooks
- Problems with running scripts and notebooks
- Incompatibility with newer iOS versions
Requested features
5 requests- Add support for SciPy, Scikit-learn, and other scientific computing libraries
- Improve file management and integration with cloud storage services
- Implement split-screen or multi-window support
- Add more keyboard shortcuts and customization options
- Improve error handling and provide more detailed error messages
ReasonML
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Carnets
No in-app purchases
ReasonML
No in-app purchases
