Juno Connect vs CodeMaster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Juno Connect
Access powerful cloud-based computational environments from your mobile device. Connect to remote Jupyter servers, utilize extensive computing resources, and enjoy a full-featured code editor on your iPhone or iPad.
- 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
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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.
CodeMaster
A professional mobile code editor and development tool for iOS. It offers comprehensive code browsing, editing, and management features, along with integrated tools for remote connections, database design, and GitHub integration.
- File management and browser
- VS Code core Monaco editor
- GitHub integration
- Code snippet management
- Database design tool
- SSH client and SFTP
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CodeMaster - Mobile Coding IDE CodeMaster is a professional code browsing and development tool for iOS platforms, specifically designed for developers. It integrates multiple practical tools, supports multiple programming languages, and provides complete mobile code browsing, editing, management, and auxiliary development capabilities. Built-in local AI LLM delivers smart Q&A and code assistance even offline, turning your phone into a portable computing hub. Features: - File Management and Browser: Supports WiFi and WebDAV file transfer between devices, quick access to code files on mobile, supports cross-screen programming, and allows access to files on mobile via URL for code editing; intuitive directory management interface, supports preview of multiple file formats, and simultaneously supports viewing, editing, decompression, and compression of various documents. - Code Editor: Integrates the VS Code core Monaco editor, delivering a desktop-level editing experience. Supports multi-language syntax highlighting, intelligent code completion and suggestions, and allows customization of multiple editor themes to suit usage habits. - GitHub Integration: Search for open-source projects and specific code snippets, browse trending projects on the platform; supports browsing personal profiles and repositories, and enables direct editing of project code on mobile devices, seamlessly connecting to open-source development. - Code Tools: Store and manage frequently used code snippets for quick insertion, built-in code comparison tool to contrast version differences, provide multi-language code execution environment and hundreds of code template libraries for various languages, enhancing development efficiency. - Database Design: Built-in database design tool supporting MySQL and other types of database design; graphical display of data content, equipped with SQL editor, can directly write and execute MySQL statements, convenient database management. - Remote Connection: Built-in SSH client to connect to remote servers, supports secure SFTP file transfer, allows direct management of remote server files from mobile devices, enabling remote operations anytime, anywhere. ►Unlimited Access Membership Subscription - With this subscription, you can access all features in the application without restrictions. - Subscription charges depend specifically on the selected subscription plan. - When you confirm the purchase, your iTunes account will be charged. - You can turn off auto-renewal 24 hours before the current subscription ends, otherwise it will auto-renew. - The subscription fee will be deducted from your account 24 hours before the current subscription ends, depending on the package you choose. Privacy Policy: http://www.dazhuogroup.com/codemaster/privacy_statement_en.php Terms of Use: http://www.dazhuogroup.com/codemaster/terms_of_use_en.php If you have any questions or concerns, please visit http://www.dazhuogroup.com/codemaster/ and use our customer support email for feedback
Screenshots
Verdict
The clearest difference is price: CodeMaster at Free against Juno Connect's $4.99. Juno Connect's advantage is in-app purchases (none vs 3) and review sentiment (69% vs 44%). On rating, update cadence, ads and chart position 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
CodeMaster is free to download; Juno Connect costs $4.99 up front. CodeMaster sells 3 in-app purchases, starting at $1.99 per 7 days. Juno Connect asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for Juno Connect against 4.6 for CodeMaster. Both are backed by a comparable volume of ratings — 633 and 140 respectively. Written reviews are what separate them: 69% of Juno Connect's written reviews are positive against 44% of CodeMaster's.
Juno Connect ships an update every 5 weeks, CodeMaster monthly. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.
| Parameter | Juno Connect | CodeMaster |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.6 (633 ratings) | 4.6 (140 ratings) |
| Positive reviews | 69.0% of reviews — better | 44.4% of reviews |
| Number of ratings | 633 — better | 140 |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid — better | Subscription |
| Best chart rank | #70 — better | #160 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 16 |
| Further details — not scored | ||
| Size | 15 MB | 1.5 GB |
| Age rating | 17+ | 4+ |
| Developer | Rational Matter Ltd | Shanghai Dazhuo Information Technology Co., Ltd. |
Customer experience
Juno Connect
CodeMaster
Bugs and requests
Juno Connect
Reported bugs
4 issues- Fails to display notebooks
- Crashes and freezes
- Incompatibility with latest Jupyter versions
- Issues with Korean and other non-English input
Requested features
5 requests- 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
CodeMaster
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Juno Connect
No in-app purchases
CodeMaster
- Weekly Membership3 Days trial$1.997 Days
- Monthly subscription3 Days trial$3.991 Month
- Annual Subscription3 Days trial$20.991 Year









