rubyi-run code autocomplete is an iOS Ruby app designed for learning, running, and sharing Ruby scripts. The program offers a range of features including autocomplete, auto-indent, and code coloring. Users can select text to run in either the built-in browser or the text editor, supporting horizontal screen development. Additionally, code templates allow for easy creation of new files based on template content.

Users can input Ruby code via the keyboard and execute it, with support for the gets function. The app also provides file system support for various file formats like txt, pdf, chm, and more. Customization options include adjusting code color, font size, and cursor movement for an improved reading and writing experience. Access learning materials through the built-in browser, save code and learning materials, and share them via email, Weibo, Twitter, and Facebook.