Comparison

Python IDE & Jupyter vs CodeViewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Python IDE & Jupyter

This app provides a full-featured Python coding environment for mobile devices. It supports both Python scripts and Jupyter notebooks, offering offline execution, code completion, and access to popular data science libraries.

Highlights
  • Python script and Jupyter notebook support
  • Offline code execution
  • Code completion and console
  • File and folder navigation
  • Data science library integration
  • Package management
Features
Read full 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!

About

CodeViewer

Features
Read full description

CodeViewer is a fast, lightweight code viewer for iPhone and iPad. Free: Import and view up to 30 code files. Upgrade to Pro: Unlock unlimited file imports. Monthly, yearly, or lifetime plans available. Go to Settings → View Plans to purchase or restore previous purchases. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Python IDE & Jupyter4 screens
CodeViewer4 screens

Verdict

The call

The clearest difference is chart position: Python IDE & Jupyter at #135 against CodeViewer's unranked. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Python IDE & Jupyter sells 1 one-off in-app purchase and CodeViewer sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 10 level
Python IDE & Jupyter versus CodeViewer: the parameters behind the verdict, then further details
ParameterPython IDE & JupyterCodeViewer
PriceFreeFree
Rating4.6 (1.1K ratings) — better—
Positive reviews58.8% of reviews—
Number of ratings1.1K — better—
Update frequencyEvery 5 weeks—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
Best chart rank#135 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.6 — better
Further details — not scored
Size661 MB12 MB
Age rating4+4+
DeveloperRational Matter Ltd江林 任

Bugs and requests

Python IDE & Jupyter

Reported bugs

3 issues
  • Crashes when running certain code or opening files
  • Unreliable file management and syncing
  • Compatibility issues with newer iOS versions

Requested features

4 requests
  • Add support for more Python libraries and frameworks (e.g., TensorFlow, Keras, Scikit-learn)
  • Improve integration with external file storage (Google Drive, Dropbox, etc.)
  • Implement cell collapsing and text size adjustment
  • Add an interactive REPL terminal

CodeViewer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Python IDE & Jupyter

One-time1
  • Juno Pro Unlock$39.99
3 purchases

CodeViewer

Subscriptions2
  • CodeViewer Monthly$1.991 Month
  • CodeViewer Yearly$4.991 Year
One-time1
  • Lifetime Unlock$9.99

Questions

Is Python IDE & Jupyter free?
Python IDE & Jupyter is free to download, with in-app purchases available.
Is CodeViewer free?
CodeViewer is free to download, with in-app purchases available.
Do Python IDE & Jupyter or CodeViewer have ads?
Neither Python IDE & Jupyter nor CodeViewer shows ads.

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