C Starter

C Starter is a programming and learning environment for iPhone, iPad and Mac. Write, compile and run C17 programs locally, without creating an account or setting up a compiler. Learn through practice Eight free lessons cover your first program, variables, input, conditions, loops, functions, arrays and pointers. Read explanations, try examples, edit exercises and check results on your device. Your drafts and learning progress are saved locally. A practical C workspace - Edit multi-file projects with .c and .h files - Compile and run C17 code on your device - Provide input before running or enter it interactively - View output and compiler diagnostics - Stop a running program or send end-of-input - Automatically save source code and continue later Reference and exploration Read introductory C reference examples and seven Explore articles, including the language's history, applications, coding conventions, libraries and recommended books. Learning content and the interface support English, Simplified Chinese and Japanese. Free use and optional IDE Pro One editable default workspace and all basic lessons are free. IDE Pro is an optional one-time purchase that unlocks multiple local projects, project duplication and editing all projects. No subscription. Restore purchases with the same Apple Account. The default workspace remains available, and losing Pro access does not delete other projects. On-device execution Source code is compiled and run locally; it is not uploaded to developer servers. The app may connect to Apple services and retrieve optional app information. Core programming and bundled learning content work offline. C Starter uses a bundled Clang 8.0.1 WebAssembly toolchain for a C17 console environment. It is not a full desktop operating-system environment: processes, native threads, networking and arbitrary third-party libraries are not provided. Files created by running programs are temporary for that run. IDE Pro does not change these runtime capabilities.