C Starter Product
Learn C on your device
Write, compile and run C17 console programs on iPhone, iPad and Mac without setting up a compiler. Source code is compiled locally and is not uploaded to a compilation server.
Practice and explore
Includes 8 free introductory lessons, exercises, 6 standard-library reference entries and 7 exploration articles, available in English, Simplified Chinese and Japanese.
Local workspace
Edit main.c and additional .c/.h files, view compiler diagnostics and output, and provide preset or interactive standard input. The free version includes one editable default workspace. Optional IDE Pro is a one-time purchase for multiple local projects and duplication.
Runtime scope
C17 is compiled to WebAssembly in a local console environment. Program-created files are temporary and reset for each run. OS processes, threads, native dynamic libraries and arbitrary desktop project compatibility are not provided. IDE Pro does not change the compiler’s capabilities.
Requirements
iOS/iPadOS 18 or later; macOS 15 or later. Projects are stored locally; back up your workspace. App-provided iCloud project sync is not included.