Python IDE & Jupyter – Juno

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, Polars, DuckDB, Matplotlib, SciPy, Scikit-learn, OpenCV, pygame, and more
• Enjoy painless package management: install any pure Python package with an intuitive package manager

AI CODING ASSISTANT

The assistant runs on your account or your key, not ours: sign in with your account or 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.

GAMES AND EMULATORS

pygame is built in: write games with touch controls, sound, and full-screen graphics, and play them on your device. Eight complete games ship as examples, alongside NES, Game Boy, and CHIP-8 emulators written in Python, each with a library of freely licensed homebrew games — play them, then open the code to see how they work.

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.

SCRIPTS AND NOTEBOOKS

Python scripts (.py) get snappy, intelligent code completion, a console with a full terminal emulator, and a built-in media viewer for code-generated images, plots, and web apps. Jupyter notebooks (.ipynb) keep live code, markdown text, plots, images, and LaTeX equations in one file, with every output embedded right in the document — a perfect playground for data analysis and computational science.

What's New in Juno 4.3.5:

Minor bug fixes and improvements.

Here's everything new in Juno 4.3:

A NEW HOME SCREEN

• Juno now opens on Home, a customizable quick launcher for your files, examples, and games.

MORE PACKAGES BUILT IN

• Polars, DuckDB, scikit-image, Biopython, PyCryptodome, XGBoost, LightGBM, and more now ship with Juno — nothing to install, just import them.

GAMES AND TURTLE GRAPHICS

• pygame is now bundled, along with complete games and retro emulators, including NES and Game Boy, all written in Python with their code ready to explore.
• import turtle now works, with starter examples that take you from your first drawing to small interactive programs.

MORE

• Jupyter notebooks now open as live, editable tabs inside projects.
• Richer syntax highlighting for Markdown files in the editor.
• URLs printed to the Console are now tappable.
• A range of stability and reliability fixes.