RunRS

Rust Compiler & Code Editor

$4.99 · Designed for iPad. Not verified for macOS.

Start with a small experiment or one of 95 Rustlings exercises. Run your code online, work through compiler feedback, and pick up where you left off. Keep a little Rust in your pocket. Write code on your iPhone or iPad, run it, and learn something new from each exercise and compiler error. Try a small idea in your own project or follow the Rustlings exercises. Change the code, inspect the results, and keep experimenting. WRITE CODE. RUN IT. Create multi-file Rust projects with syntax highlighting, input suggestions, code snippets, and a quick reference. Search your code, undo edits, adjust the text size, and check syntax locally. A symbol bar and cursor tools help with editing on a touchscreen. Compile and run online, provide standard input, and view program output and compiler diagnostics. Select a diagnostic to return to the relevant file and line. LEARN WITH 95 EXERCISES Explore 26 Rustlings chapters covering variables, control flow, ownership, borrowing, collections, error handling, generics, and more. Read exercise instructions, reveal a hint when you need one, and compare your work with a reference solution. Drafts and progress are saved on your device, so you can continue where you left off and move to the next exercise after a successful check. WORK THROUGH COMPILER ERRORS See the original compiler diagnostics alongside explanations and small examples for common ownership, borrowing, and type errors. Find what to examine next, then test your changes. PREPARE A CLEARER AI QUESTION RunRS suggests relevant files using diagnostics and run results. Choose code excerpts or complete files, diagnostics, and output to include in your question. Copy the prepared text, open your chosen third-party AI platform, and paste it into a conversation. PICK UP WHERE YOU LEFT OFF Projects, exercise drafts, and editing positions are saved locally. Switch between English and Simplified Chinese. No RunRS account is required. Please note: • Compilation, execution, and exercise checks require an internet connection. Relevant code and run input are submitted to the execution service. Editing and saving drafts work offline. • Personal projects currently support the Rust standard library. Adding external dependencies is not supported. • Ask AI prepares and copies context for use with third-party platforms. Those platforms may require their own accounts, and availability varies by platform and region. • Exercises are based on the open-source Rustlings project and its Chinese edition. License details are available in the app. RunRS is an independent app.

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The developer, 琨 杨, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • User Content
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
琨 杨
Size
30.2 MB
Category
Developer Tools
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and Simplified Chinese
Age Rating
4+
Copyright
© 2026 RunRS
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.