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iOS-Runtime-Headers is a large collection of Objective-C header files reconstructed from Apple’s private iOS frameworks and the public runtime. Its purpose is to expose class interfaces—methods, properties, ivars, protocols—that are not documented by Apple, making it easier to explore system behavior and reverse-engineer APIs. The headers are generated by inspecting binaries and metadata, then organized by framework so developers can browse relationships and inheritance hierarchies. This is invaluable for research, debugging, and tooling where you need to understand what UIKit, Foundation, or lower-level frameworks are actually doing under the hood. The project encourages read-only exploration; code using private APIs is generally unsuitable for App Store distribution. Practitioners use it to guide experiments, prototype ideas, and inform jailbreak or internal tooling where runtime knowledge is essential.
Features
- Dynamically generated headers for iOS frameworks derived from runtime introspection
- Includes both public and private API definitions
- Supports diffing between versions (e.g., iOS 6.0 vs. 6.1) using tools like RuntimeBrowser
- Facilitates understanding of private framework class structures and methods
- Enables advanced debugging or reverse-engineering tasks
- Receives contributions and updates via GitHub, with a significant star and fork count
Project Samples
