Juno review
A capable local Python workspace for iOS, with notebooks and optional AI assistance.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Juno is a native Python development environment for iPhone and iPad, aimed at developers, students, analysts, and notebook users who want to write and run Python without leaving an iOS device. It combines Python files, Jupyter notebooks, multi-file project workspaces, and interactive REPL sessions in one app. A local Python 3.13 interpreter supports execution, while code completion, an Object Inspector, scientific and data-analysis libraries, and rich output viewing extend the editing environment. The free tier covers Python files and notebook editing and includes a code-execution trial; Juno Pro adds script, project, and notebook execution through the embedded interpreter locally and offline.
Its strongest fit is the iOS ecosystem. Juno connects with Files and iCloud Drive for file handling, PyPI for packages, and Apple Shortcuts and Siri for automation. The built-in browser includes page-source and JavaScript-console debugging tools, which can help when working with local web apps. Optional AI coding assistance is available through OpenAI, Anthropic, and Google Gemini integrations. This gives Juno a broader workflow than a notebook-only app while keeping development centered on Apple mobile devices.
The main trade-off is scope. Juno is designed for local iOS development rather than serving as a general desktop IDE, and its package manager targets pure-Python packages. That makes it a practical choice for portable scripting, learning, notebooks, and data-focused work on an iPhone or iPad. Developers who need a cross-platform desktop environment or broader project infrastructure should choose a different Python IDE. Users seeking local execution, notebook support, automation, and mobile access should find Juno the more focused option.
Juno pros and cons
- Where it wins
- Runs Python 3.13 locally and offline with Juno Pro
- Combines notebooks, scripts, workspaces, and a Python REPL
- Supports Apple Shortcuts, Siri, Files, iCloud Drive, and AI services
- Where it doesn't
- The platform scope is limited to iPhone and iPad
- Free execution is limited to a trial
- Package management is focused on pure-Python packages
Juno fact sheet, pricing and score →
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