Juno – Python and Jupyter 4+

Coding with Python and Jupyter

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 3.5.0

What’s New in 3.5:

– New packages: astropy, jiter (improves compatibility with recent OpenAI package releases).
– Unpins the bokeh package, which can now be installed or upgraded in the package manager.
– Fixes several crashes and errors originating from scipy.
– Fixes a crash related to code completion.
– Addresses several minor UI and layout issues in the app.

Ratings and Reviews

4.2 out of 5
18 Ratings

18 Ratings

valentinvdb ,

Works well for the most of it

The app works well for the most of it, but freezes once in a while and I have to quit it and restart, losing the last bits of my work.

Developer Response ,

Apologies for a late reply — this should be resolved in the recent Juno 2.x releases. Please, reach out to help@juno.sh if it's still happening, and I'll be happy to take a look. 😊

Jan’93 ,

Jan

* Unstable, ipynb randomly wont open both as preview and edit. Seems to happen when wifi is not on, noticed it especially in flight mode
* Requires 30 usd to use, but is too unstable to be reliable enough
* Session sometimes automatically closes when multi tasking to other apps on ios while on wifi, ie to search for code examples, and then 30-60 sec later when coming back to the still open instance of juno it defaults you back to file overview page, meaning have to reopen the file, run it and continue again where you left off
* No undo button when accidentally pasting text, and deleting the text by holding in delete button takes forever because for every delete the intellisense prompt with code suggestion also when deleting comments
* Bug, cant adjust text size in preview of ipynb file, even with all 4 size settings set to extra small
* Cant navigate to files outside of juno folder, have to manually copy them in. Was hoping to point to certain folders on iphone to process data
* Have to run cell one by one, no run all cell button. Clicking play button seems to only run cell if you have your marker in a cell. When cell does run its hard to know if it has run or not. Sometimes it run fast, other times I have ie changed print output and clicked run 2-3 times but cell did not run yet (cell with simple logic)

Developer Response ,

👋 Hey—first of all, thank you for such a detailed response! A few things that in fact do work as you expect them to:

1. You can undo pasting text using system gestures (on iPhone: three finger swipe, or shake-to-undo).
2. You can add any directory on your device as a bookmark, and edit its contents “in place”, as if it was in Juno folder—you can navigate them, run scripts and notebooks, etc.
3. You can switch default Run action by pressing and holding the button (or in app settings)—there is a Run All option, of course.

A few other things mentioned do sound like bugs—apologies about that. If you could please reach out to help@juno.sh so that I can ask for some additional info, that would be super helpful. I will look into those either way though—thanks for reporting!

ᔕIᒪEᑎT ᗷOᗷ ,

Good App!

Great application on the go! Now I can study and write my python code anywhere I go.. -iE3DevIT :)

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 based on, for example, 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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