Juno
Coding with Python and Jupyter
S$ 59.98
Zero-setup Python IDE that runs your code offline, an AI coding assistant, and a developer toolbox — in a first-class citizen app for iPad and iPhone.
Juno is designed to cover all your Python coding needs, supporting 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 edit Jupyter notebooks in a powerful, customizable notebook editor with beautifully rendered previews — editing is free
- Write and edit code sources, scripts, JSON, XML, and other text-based formats — one versatile editor for code and text alike, with syntax highlighting
- Add quick access bookmarks for file system locations outside the app's sandbox, or simply open documents in place
PRO FEATURES
Only one thing in Juno is Pro: running code. Even that is free to try — a generous trial allowance lets you run notebooks, scripts, projects, and the REPL before you buy. After the trial, running code unlocks with a one-time Pro purchase — not a subscription.
- Run Jupyter notebooks, Python scripts, and whole projects locally with the built-in Python 3.13 interpreter and a full suite of up-to-date, preinstalled scientific and data packages — entirely offline
- Explore interactively in a Python REPL — open a standalone prompt, or drop into it after running a script or project to keep exploring what it defined
- Search the variables, functions, and imports in your session with the Object Inspector — no need to print each one
- Open any folder as a project: file tree, multiple editor tabs, run any script, with a coding assistant aware of the whole project
- Keep side outputs — Preview, Browser, Console, Object Inspector — open as side-by-side tabs in an output sidebar
- View local web servers and HTML your code produces in a built-in browser with developer debug tools
- Long-running scripts and Jupyter sessions keep going in the background
- Automate with Shortcuts and Siri: App Intents run a Python file, run Python code, or open a file — pass arguments and files, capture output, and chain actions
- Leverage powerful data analysis, machine learning and developer tools: NumPy, pandas, Matplotlib, SciPy, Scikit-learn, OpenCV, LXML, and more
- Enjoy painless package management: install any pure Python package with an intuitive package manager
AI CODING ASSISTANT
The assistant runs on your key, not ours: add your OpenAI, Anthropic, or Gemini API key, and requests go straight from your device to your provider. You control what you spend and share — Juno never takes a cut.
PYTHON MEETS iOS
Reach native iOS APIs straight from Python with the built-in juno modules: clipboard, Keychain, device info, location, motion sensors, contacts, reminders, photos, sound, notifications, sharing, and Bluetooth. Show native alerts and pickers, present full-screen image, video, and web previews, or call into UIKit, Foundation, and any Objective-C framework via the Objective-C bridge.
PYTHON SCRIPTS
Python scripts are plain-text Python source code files with a .py extension. Juno lets you work on these with snappy, intelligent code completion, a console with full terminal emulator support, and a built-in media viewer for code-generated images, plots, web apps, and more — executed by the embedded Python interpreter, locally on your iPhone or iPad and completely offline.
JUPYTER NOTEBOOKS
A Jupyter notebook is a versatile document format that stores live code, markdown text, plots, images, and LaTeX equations in a single .ipynb file. Notebooks keep a record of every input and output of an interactive session, embedding rich output (HTML, images, video, plots) right in the document — a perfect playground for data analysis, machine learning, and computational science, and Juno makes working with them a breeze!
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
What's New in Juno 4.2:
THE PACKAGE MANAGER, REWORKED
– Install a package and Juno works out everything else it needs, shows you the plan, and installs the whole set.
– Point it at a project's requirements.txt and it does the same for every package the project needs.
– Package pages are rebuilt around the project's README, its versions, and what's installed on your device.
– Browse popular packages, see when updates are available, and tidy up dependencies left behind when you uninstall.
MORE AI PROVIDERS
– Use OpenRouter, DeepSeek, Together, or Groq, or point Juno at any OpenAI-compatible endpoint — including a model server running on your own network.
– Some providers now let you sign in with your account instead of pasting an API key, and Juno shows how much of its allowance is left.
– New models throughout the catalog, with context and account limits shown right in the composer.
UPDATED ENVIRONMENT
– pandas 3.0, NumPy 2.4.6, scikit-learn 1.9, SciPy 1.18, and lxml 6.1.1 lead a refresh of the bundled packages.
MORE
– Juno launches faster when you have a lot of packages installed.
– A range of stability fixes, including crashes in the code editor, with the iPad keyboard, and when shutting down a kernel.
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
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Rational Matter Ltd
- Size
- 693.4 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 7 more
- English, French, German, Japanese, Russian, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Rational Matter Ltd

