Juno – Python and Jupyter 4+

Notebook and script coding IDE

Rational Matter

    • Free
    • Offers In-App Purchases

Screenshots

Description

Zero-setup Python environment and developer toolbox in a first-class citizen app for iPad and iPhone.

Juno is designed to cover all your Python coding needs, and will work seamlessly with all source code formats. Juno supports both Python scripts (.py) and Jupyter notebooks (.ipynb) — a document format focused on applying Python to data analysis and computational science.

FREE FEATURES

- Navigate and manage files and folders, quickly preview documents and media
- Browse and view Jupyter notebooks with quick and beautifully rendered previews
- Navigate through code sources, scripts, JSON, XML, and other text-based formats with rich previews and syntax highlighting
- Add quick access bookmarks for file system locations outside the app's sandbox, or simply open documents in place

PRO FEATURES

- Run code in Jupyter notebooks and Python sources locally on your device with a built-in Python 3.10 interpreter, entirely offline
- Write and execute Python code in a full-fledged development environment, featuring snappy, intelligent code completion and a console with full terminal emulator support
- Access all Jupyter features in a modern, powerful and customizable notebook editor
- Leverage powerful data analysis, machine learning and developer tools: NumPy, Matplotlib, SciPy, Scikit-learn, Pandas, LXML, and more
- View and edit any file as text in a built-in versatile plain text editor with syntax highlighting
- Enjoy painless package management: easily install any pure Python package with an intuitive package manager

PYTHON SCRIPTS

Python scripts are plain-text Python source code files with a .py extension. Juno lets you work on these with snappy code completion, a console with full terminal emulator support, a built-in media viewer for code-generated images, plots, web apps, and more. Juno will execute the code using an embedded Python interpreter, locally on your iPhone or iPad and completely offline.

JUPYTER NOTEBOOKS

A Jupyter notebook is a versatile document format that enables you to store live code, markdown text, plots, images, and LaTeX equations — all within a single notebook file with a .ipynb extension. Notebooks serve as excellent Python coding playgrounds for data manipulation and experimentation, and Juno makes working with them a breeze!

Notebook documents keep a record of all inputs and outputs from an interactive programming session, and the rich output generated by running Python scripts (including HTML, images, video, and plots) is embedded within the Jupyter notebook document. They are particularly convenient for coding in Python for data analysis, machine learning, or computational science in general.

What’s New

Version 3.7.0

What’s New in 3.7:

– App localisations: Juno now supports German, French, Spanish, Russian, Japanese, and Simplified Chinese.
– Added support for CJK and Cyrillic fonts in Matplotlib.
– Fixed several crashes and minor layout issues.

Ratings and Reviews

4.4 out of 5
75 Ratings

75 Ratings

Loc'Wolf ,

Jupyter is a Game changer

Great application, I came from using pythonesta which is also a Great application in it’s own right. But the addition of Jupyter and its ability to run code block in its own cell is genius. I would love to see further improvement and support pass python 3.10 and more add on support. Regardless this is a step in the right direction.

MikeOWaterloo ,

Cant import most packages

If you need to run anything but a few very standard packages, forget Juno.

Developer Response ,

Hey 👋, I'm afraid this is due to platform restrictions: packages with native extensions need to be recompiled for Juno and embedded into the app — which is a manual and time-consuming process. I'm making my way through the list of user package requests, so if you realise that a particular package is missing, please open a package request in Juno's issue tracker: https://github.com/rationalmatter/Juno-Issue-Tracker/issues. Thank you!

BaysideAyjan ,

Amazing!

I’ve used Juno for years and am so happy to shout out these developers. There is consistent support and updates to the app and to the underlying libraries. Juno is actually my main daily Jupyter notebook and code editor. It’s amazing to have it available wherever I am and I can achieve so much with it. I can’t wait to see what updates iOS and iPadOS 26 will bring. Even though I’ve purchased and supported these developers, I’m also planning on fully unlocking Tinkerstellar as well (another great app from these devs). Please keep up the great work and great support!

App Privacy

The developer, Rational Matter, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Supports

  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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