iOS Objective-C to Swift Migration Tool

Apple introduced Swift in 2014 and has since made it the primary language for iOS, macOS, watchOS, and tvOS development. Many existing iOS apps still have significant Objective-C codebases, and migrating them to Swift improves safety (no null pointer dereferences), readability (no square-bracket noise), and access to modern Swift features like structured concurrency, property wrappers, and SwiftUI.

This tool accelerates the migration by automating the repetitive find-and-replace work:

• #import → import (module-level) • @interface / @implementation / @end → class { } structure • @property → var/let with Swift types • Method signatures: - (ReturnType)name:(Type)param → func name(_ param: Type) -> ReturnType • Message sends: [obj method:arg] → obj.method(arg) • [[Class alloc] init] → Class() • UIKit and Foundation type imports

The converter targets Swift 5.9 (Xcode 15+) syntax. After conversion, you will still need to add Swift error handling, adapt any Objective-C blocks to Swift closures, and verify memory management assumptions — but the mechanical boilerplate is handled automatically.