Juno is a client app for Jupyter, an interactive cloud-based computational environment, where you can combine code execution, rich text, mathematics, plots and rich media.

When you write code in Juno, the actual computing is happenning on a remote Jupyter server, giving you access to virtually unlimited computational resources from your iPhone or iPad. Juno lets you connect to your own Jupyter server, or use cloud computing services, such as CoCalc and Azure Notebooks.

• Jupyter Notebook has support for over 40 programming languages, including Python, R, Julia and Scala.
• Produce rich output with your code: HTML, images, videos, LaTeX, and custom MIME types, all wrapped into a single notebook file.
• Leverage big data tools, such as Apache Spark, from Python, R and Scala. Explore that same data with pandas, scikit-learn, ggplot2, TensorFlow.

• Optimizing Jupyter for iOS, Juno delivers a full-featured code editor experience and a complete development environment on your iPhone or iPad.
• Use all familiar Jupyter shortcuts with your external hardware keyboard.
• Launch Juno in Split-screen mode alongside other apps on iPad. Run notebooks with documentation, terminal, or other code editor in front of you.
• Get code completion suggestions for your programming language as you type, powered by your Jupyter Notebook server's kernel.
• Try Jupyter without any preliminary configuration. We have bundled introductory notebooks on Python, Matplotlib, NumPy, SciPy — and will keep adding more!

What’s New

Version 1.3.1

Thank you for using Juno! This update includes several minor (but still important) under-the-hood fixes and improvements. A more substantial update is coming soon; meanwhile, please reach out if you face any issues with the app, or if you can't get it to work with your Jupyter server — I'll be happy to help!

Ratings and Reviews

4.6 out of 5
278 Ratings

278 Ratings

Ryan J ,

Jupyter on the iPad, Finally!

I’ve been wanting something like this app for years, now, as I’ve built up a large collection of Jupyter (formerly Ipython) notebooks. I can’t praise the fine folks who have built this app enough. I have a few notebooks on Microsoft Azure Notebook and they execute flawlessly when interacting with them through the Juno app. Editing is easy and intuitive. Try out the demo notebooks and pay for the full version. It’s an absolute joy to use.

angry violinist ,

Near perfect except missing port forwarding

I suspect most people’s setup is to use ssh tunneling. Currently, I use the workaround of using Blink Shell’s port forwarding feature. However, that solution is not perfect because iOS does not allow a background app to maintain a connection for more than 10 minutes. So, currently, I have to either (1) switch back to Blink Shell every 10 minutes or (2) run Blink Shell side-by-side with Juno, which takes up much precise screen space on the iPad.

Had Juno supported port forwarding, then as a foreground app it wouldn’t have the 10-minutes connectivity issue.

Would love to bump up to 5 stars when that feature is finally implemented!

Developer Response ,

Hey! 👋 I am indeed planning to add SSH tunnelling in Juno, although I'm afraid I'm not sure when this will be released exactly — possibly in Juno 1.4, being the next significant update after soon-to-be-released Juno 1.3. Hope this gives you some reassurance, and sorry for inconvenience meanwhile. 😔

Andron1424 ,

Useful for Students

The ability to access Jupyter notebooks on azure has assisted in my write ups for physics classes, facilitated my production of scripts for automating aspects of my research, and allowed me to create small computational programs for students that I TA all from my iPad. No bugs I’ve noticed. Very fast loading. Excellent editing options. Thanks for that tab key haha! Look forward to continuing to use this app. (I’m actually doing a Prelab rn on Juno lelll)


Rational Matter Ltd
30.1 MB

Requires iOS 10.3 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
You must be at least 17 years old to download this app.
Unrestricted Web Access
© 2018 Rational Matter Ltd
In-App Purchases
  1. Juno Pro $9.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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