The swifting.io team has previously published a very thorough review of the Swiftify converter. Their review included a section on code that Swiftify failed to convert, or failed to produce the best output.
Over the past few releases, we have been working on many new features and fixes to address those issues. Since we have begun working on those fixes, Swiftify has gained some great new abilities. Swiftify now has better handling of optionals, type conversions, blocks, and it is aware of your project’s class hierarchy.
The result of this is that the project used as a demo by the swifting.io team is now converted to Swift with zero build-time errors!