Juno App Icon

Juno

Education • Rational Matter
4+ v4.4.1 Recorded price: $39.99 App Store →
IPA Analysis
Technical Specs
Bundle ID com.rationalmatter.junoapp.org
Version 4.4.1
App Store Size 1.11 GB
Minimum iOS 17.0
Devices iPhone, iPad, iPod touch
Catalog release date 2024-12-26
Latest recorded version date 2026-10-27
Features & Support
Advisory 4+
Languages (8)
EN, FR, DE, JA, RU, ZH, ES, ZH
Top In App Purchases
No In App Purchases Listed

Preview

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Description

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!

What's New

Version 4.4.1 2026-10-27
What's New in Juno 4.4: AI & ML ON-DEVICE – Run language models, generate images and train neural networks on your iPhone or iPad, from your own Python code: l...What's New in Juno 4.4: AI & ML ON-DEVICE – Run language models, generate images and train neural networks on your iPhone or iPad, from your own Python code: llama-cpp-python, MLX, mlx-lm and Keras now ship with Juno. – Five ready-to-run projects in Home's new AI & ML section: chat with a local LLM, Stable Diffusion image generation, Keras training, RAG over your own notes, and LoRA fine-tuning. Models download on the first run and work offline after that. MLX, KERAS AND STABLE DIFFUSION – Apple's MLX array framework and mlx-lm are built in: run language models and fine-tune them with LoRA adapters, right on your device. – Build and train neural networks with Keras on a fast MLX backend — the same Keras code you would write on a laptop. – Generate images from a text description with Stable Diffusion running on MLX; a compact model downloads first, and larger ones are one line away. RUN LLMS LOCALLY – Chat with a GGUF language model through llama-cpp-python, the Python bindings for llama.cpp, with replies streamed word by word. Start with the Qwen3 download, or drop in a GGUF file of your own. – Ask questions about your own notes: a small embedding model finds the relevant passages and a local LLM answers from those passages only, so nothing leaves your device. HUGGING FACE BUILT IN – huggingface_hub, transformers, tokenizers and safetensors now ship with Juno — nothing to install, just import them. Downloaded models are kept in Files, in Juno's huggingface folder. MORE – New built-in packages, including pymunk for 2D physics and audioop-lts. – Leaving the REPL now keeps your session, so you can pick up where you left off. – Notebook settings such as Wrap Lines and Show Line Numbers now apply to newly opened notebooks without a relaunch. – Security updates: refreshed trusted certificates and a fix for a vulnerability in the bundled Brotli decoder (CVE-2026-111497). – A range of stability and reliability fixes.

Technical Analysis

Package Overview Basic metadata
Bundle ID com.rationalmatter.junoapp.org
Current Version 4.4.1
Minimum iOS 17.0
Package Size App Store Size
Package Metadata 0 / 0 version records
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