# Juno Connect: Jupyter Client — Cloud Coding/Programming IDE

> Remote Jupyter client for cloud-based computational environments on iOS. (iPhone/iPad app by Rational Matter.)

- Source: https://appshunter.io/ios/app/juno-connect-jupyter-client/id1315744137 (this page in markdown: same URL + `.md`)
- Developer: [Rational Matter](https://appshunter.io/developer/1315744136)
- Category: Developer Tools, Education
- Price: $4.99 (on sale, was $9.99)
- Rating: 4.60/5 from 633 App Store ratings · 229 written reviews indexed
- Age rating: 17+
- Requires: iOS 13.0 · 15 MB
- Languages: American English
- Released: 2018-01-24
- Data updated: 2026-08-29
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/juno-connect-jupyter-client/id1315744137/reviews.md

## What is Juno Connect?

Juno Connect is a client app for Jupyter, a cloud-based computational environment. Juno Connect lets you leverage the computing power of a remote Jupyter server right from your iPhone or iPad.

With Juno Connect you can:

• Connect to cloud-computing services, such as CoCalc, Binder, SageMaker, Gradient or NAAS
• Add and configure your own remote Jupyter servers
• Leverage SSH tunneling with local port forwarding for secure connections
• Take full advantage of your keyboard and trackpad in our full-featured code editor
• Utilise full multitasking capabilities on iPad

When you run code in Juno Connect, the actual computing is happening on a remote Jupyter server, giving you access to virtually unlimited computational resources from your iPhone or iPad. You can either connect to your own Jupyter server — directly via HTTP/HTTPS, or by establishing an SSH tunnel with local port forwarding — or use cloud computing services, such as CoCalc, Binder, SageMaker, Gradient or NAAS. And if you would rather execute code on device instead, check out our other app Juno, it lets you work with Jupyter notebooks autonomously on your iPhone or iPad.

Juno Connect offers a full-featured notebook and code editor, providing a complete development environment on your iPad or iPhone. it supports Dark Mode and Dynamic Type, offers extended on-screen keyboard and works beautifully with all hardware keyboards and trackpads. Juno Connect lets you reach your Jupyter server easily and securely with SSH tunnel using local port forwarding. You can launch Juno Connect in Split-screen mode alongside other apps on iPad — run notebooks with documentation, terminal, or other code editor in front of you.

WHAT IS JUPYTER?

Jupyter is an interactive cloud-based computational environment, where you can combine code execution, rich text, mathematics, plots and rich media. It works with Jupyter notebooks, a computational document format that allows storing live code, markdown text, plots, images and equations in LaTeX — all wrapped into a single notebook file.

Notebook documents keep record of all inputs and outputs of the interactive programming session, and the rich output generated by running R, Python or Julia scripts (including HTML, images, video, and plots) is embedded into the Jupyter notebook document. They are especially convenient if you are coding in Python for data analysis, machine learning, or computational science in general.

A notebook consists of a sequence of cells, each representing either a narrative text in a form of markdown text or HTML, or a coding script with a text or media output. This makes notebooks both human-readable documents with the analysis description and the results (figures, tables, etc), as well as executable scripts for data analysis or plain programming. You can use Jupyter notebook as a document with optional executable code in it, or simply as a programming playground for data manipulation and experiments.

Jupyter supports countless programming languages, including Python, R, Julia, and Scala. Jupyter lets you leverage big data tools, such as Apache Spark, from Python, R, and Scala — or explore that same data with pandas, scikit-learn, ggplot2, PyTorch and TensorFlow. And, of course, Juno Connect lets you use whichever language kernels and libraries are installed on your Jupyter server right on your iPhone or iPad.

## Key features

- Connect to cloud computing services
- Configure custom remote Jupyter servers
- Secure SSH tunneling
- Full-featured code editor
- iPad multitasking support
- Dark Mode and Dynamic Type

## Chart rankings

- #26 in Top Paid · Developer Tools (US App Store)
- #152 in Top Grossing · Developer Tools (US App Store)

## What do users think of Juno Connect?

Overall sentiment: positive

**Pros**

- 🚀 Great app for Jupyter notebooks
- 👍 Clean, modern, and touch-friendly design
- 🚀 Stable and reliable connection to remote servers
- 💡 Allows coding on the go with iPad
- 👍 Responsive developer support

**Cons**

- 🐛 Bugs with cell execution and output display
- 🔒 Lacks support for Jupyter Lab and other file types
- 👎 Limited functionality in free version
- 👎 Keyboard and navigation issues in landscape mode
- 🐛 Unreliable connection to some remote servers

**Commonly reported bugs**

- Fails to display notebooks
- Crashes and freezes
- Incompatibility with latest Jupyter versions
- Issues with Korean and other non-English input

**Most requested features**

- Support for Google Colab and other cloud platforms
- Ability to edit text files and Python scripts
- Tabbed interface for working with multiple notebooks
- Improved terminal functionality and integration
- Option to adjust font size and theme

## Recent user reviews (10 of 229)

All indexed reviews: https://appshunter.io/ios/app/juno-connect-jupyter-client/id1315744137/reviews.md

### 5/5 — love it

*2026-04-09, version 1.6.13*

So useful

### 4/5 — Can‘t load notebook

*2026-04-03*

I can connect to my jupyter server and it correctly lists the available notebooks etc. But the notebook view itself does unfortunately not load. I can’t use this app.

Edit: I could fix the connection issues eventually. Connecting to a server exposed via tailscale did not work and I had to change my setup to use a https reverse proxy. Now it does work fine most of the time, but occasionally there are errors and the error messages of this app are very unhelpful to diagnose and fix any problems. I would appreciate more informative error messages.

**Developer response:** Hey 👋—JupyterLab 4 isn’t fully supported yet I'm afraid; in the meantime, you should be able to connect by installing Jupyter’s `nbclassic` package, and updating the server's URL in Juno Connect to `{SERVER_ADDRESS}/nbclassic/tree`. This will work seamlessly alongside JupyterLab 4 / Notebook 7 installation using their backend components. Fell free to reach out to help@juno.sh if you stumble upon any issues. 😇

### 5/5 — I like it

*2026-03-12, version 1.6.13*

Now getting the hang of it

### 1/5 — 表示されない

*2026-01-15*

Jupyter notebookには接続できるが
肝心のノートはFailed to display notebookと言われ表示できない。
またCoCalcに接続できないのも不便

### 1/5 — Not working

*2025-12-02, version 1.6.13*

Can’t get the app to display my notebook, which displays fine in web browsers

### 1/5 — Does not respond to support requests

*2025-11-05, version 1.6.13*

Per the screenshots and other documentation this app natively supports integration with "cocalc" which is a type of virtual computing service. So far, i cannot find an option to add cocalc anywhere in the actual app interface- reached out twice, no response yet. Will update when/if i get a response

### 4/5 — Overall great app but some minor bugs (ipad 9th gen)

*2025-10-31, version 1.6.13*

So far interface has been great and really looking forward to text size change integrated into the app so I can fit more text on my screen. I have faced some bugs in the app related to restart and run all command. Clicking this breaks the connection causing an infinite loop and disconnect and reconnect with no cells being run. Another bug has been highlighted code when in cell. I face issues with highlighting multiple lines which is kinda annoying since this seems like something really basic feature. Also faced a small issue with creating a jupyter notebook file on the server (button does not seem to work). While this might make the app seem terrible, just know even with these issues, this app has a made it a joy to take my ipad with me on the go to my classes and being able to edit, run, and create new models!!!

### 4/5 — After trouble shooting, works amazing!

*2025-10-23*

While  I did have to do a lot trouble shooting at first with getting my remote jupyter files to display (connecting to personal machine) by changing to using nbclassic, the app itself looks and runs so smoothly on my ipad 9th gen. I can already see how this will be amazing for working on the go and can’t wait to see how it will expand my work on the ipad when going to classes or traveling. The fact this app only costed 4.99 honestly surprises with the great UI (some hiccups here and there) and Jupyter integration

### 1/5 — Can‘t load notebook

*2025-10-17, version 1.6.13*

I can connect to my jupyter server and it correctly lists the available notebooks etc. But the notebook view itself does unfortunately not load. I can’t use this app.

### 5/5 — Elevates Jupyter and the iPad to their best selves

*2025-09-08, version 1.6.13*

This is one of my favorite apps on my iPad.

It takes Jupyter notebooks from being rather awkward on the iPad, to being a real joy to use. And it turns the iPad into a convenient tablet device for analysis which no other device can exactly replace. In other words, it combines these two products in a way that creates a unique and new version of each one, and it's great!

My only complaint about it, really, is my fear that it will go away, because it is not popular enough to support sustained development. I hope it sticks around.

My main feature suggestion is that it might be cool to lean into the iPad's capabilities, and add an integrated drawing control to the app, for inserting quick hand-drawn sketches into a notebook. This could also be a way to add equations for OCR in the notebook.

## Frequently asked questions about Juno Connect

### What does Juno Connect do?

Juno Connect is a client application that allows you to connect to and use remote Jupyter servers from your iPhone or iPad. It provides access to cloud-based computational environments, enabling you to run code, create notebooks, and leverage significant computing power directly from your mobile device.

### What are the key features of Juno Connect?

Key features include connecting to various cloud computing services like CoCalc and SageMaker, configuring your own remote Jupyter servers, secure SSH tunneling for connections, a full-featured code editor with keyboard and trackpad support, and multitasking capabilities on iPad. It also supports Dark Mode and Dynamic Type.

### How much does Juno Connect cost?

Based on the provided information, Juno Connect is a paid application. There are no mentions of in-app purchases or advertisements, suggesting a one-time purchase model.

### What devices is Juno Connect compatible with?

Juno Connect is designed for use on Apple mobile devices, specifically the iPhone and iPad. It leverages features like multitasking on iPad and works with both on-screen and hardware keyboards and trackpads.

### Who would benefit from using Juno Connect?

This app is ideal for developers, data scientists, and researchers who frequently use Jupyter notebooks for tasks such as data analysis, machine learning, or computational science. It's particularly useful for those who need to access powerful remote computing resources while on the go or away from their primary workstation.

## Version history (last 5 releases)

### 1.6.13 — 2022-09-18

This release fixes several issues related to keyboard and scrolling.

### 1.6.12 — 2022-08-21

Fixes a couple of minor UI issues.

### 1.6.11 — 2022-03-11

– Fixes a couple of minor UI issues

### 1.6.10 — 2022-02-13

– Fixes a crash and a couple of minor issues in notebook editor
– Fixes a kernel reconnect loop affecting some SSH connections

### 1.6.9 — 2021-10-10

– Adds a media viewer for cell output: view generated plots fullscreen, zoom and share!
– Improves Korean IME input support.
– Fixes colouring of Pandas DataFrame objects in cell output.
– Fixes several nasty crashes, as well as a few smaller bugs.

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## More apps by Rational Matter

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All apps by Rational Matter: https://appshunter.io/developer/1315744136

## Related topics

[rational matter](https://appshunter.io/ios/topics/rational-matter)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*