J2ObjC vs SWC

J2ObjC plans

• Free and open sourceFree

SWC plans

• SWCFree

Pick J2ObjC if…

J2ObjC suits developers who want to reuse Java non-UI code in iOS apps and can work with the listed Mac, Xcode, and JDK requirements. It is not for converting Android binaries or sharing a cross-platform UI.

Pick SWC if…

SWC suits developers and build-tool authors working with JavaScript or TypeScript. It is also relevant to teams seeking compiler integrations with tools such as webpack, Rspack, or Jest.