Juno – Python and Jupyter

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!