An online tool for automatically converting Objective-C to Swift. Swiftify can convert everything from a small code snippet to an entire project, and supports most of the main features of both languages. They've also recently created an Xcode extension available on the Mac App Store that lets you convert Objective-C to Swift without even leaving Xcode. The generated code might not be guaranteed to be perfect but it could save you a lot of time when converting your projects. You can use the tool online for free with a few restrictions or pay an monthly or annual fee to unlock all the features.