Swift · Xcode · Workspace
Swift code similarity check
Swift-only studios still recycle navigation stacks, coordinators, and networking veneers. apporig parses Swift ASTs so renamed types cannot hide clones across white-label compilations.
Why Swift teams run similarity checks beside normal unit tests?
Tests defend behavior; uniqueness checks expose structural reuse that moderation teams scrutinize.
Seeing COPY tiers next to Xcode targets clarifies exactly which modules differentiate each SKU.
How do SwiftUI-heavy apps stay comparable?
Bindings and property wrappers flatten into comparable trees alongside UIKit controllers, so frameworks can mix without weakening evidence.
FAQ
How does Swift code similarity detection work?
apporig parses Swift files into ASTs and computes structural fingerprints. It detects identical class hierarchies, method signatures, and control flow even when names are changed.
Can apporig detect renamed Swift classes?
Yes. AST structural analysis is resistant to renaming. Two Swift files with different class names but identical structure are flagged as RELATED or COPY.
Does SwiftUI code analysis differ from UIKit?
apporig analyzes Swift source regardless of UI framework. ViewModels, services, and models are compared structurally — the layers most often duplicated in template apps.
What Swift patterns indicate template reuse?
Identical AppDelegate setup, copied networking layers, shared Coordinator patterns, and duplicate ViewModel structures. apporig AST analysis surfaces these across projects.
Can I compare Swift packages across iOS apps?
Yes. apporig analyzes all Swift source in your uploaded project including local packages and shared modules.
How to reduce Swift code similarity between apps?
Rewrite flagged modules with different architecture patterns, extract shared code into genuinely reusable libraries with clear purpose, and avoid copy-pasting view controllers.
Does apporig support Swift 5 and Swift 6?
apporig uses tree-sitter Swift parser updated for current Swift syntax. Both Swift 5 and Swift 6 projects are supported.
Can apporig analyze mixed Swift and Objective-C projects?
Yes. Both languages are parsed and included in similarity analysis. Bridging headers and mixed targets are handled automatically.
What is Swift token winnowing in apporig?
Token winnowing creates fuzzy fingerprints of Swift code tokens. It catches partial copies and refactored code that exact file hashing would miss.
How to check Swift code before App Store 4.3 review?
Upload all iOS apps to apporig, review Swift similarity matrix, rewrite COPY-status pairs, and rescan before submission to Apple.
Is Swift AST analysis better than text diff?
Yes for refactor detection. Text diff misses renames and formatting changes. AST analysis compares program structure — what store reviewers effectively evaluate.
Can apporig find copied Swift extensions and protocols?
Yes. Protocol conformances, extension methods, and generic structures are included in AST fingerprints and compared across projects.