Swiftify for Xcode is an extension that allows you to convert Objective-C code to Swift right from Xcode. To install the Swiftify Xcode extension, you need to quit Xcode, launch "Swiftify - Objective-C Converter for Xcode" from your Applications folder and follow the link to get your API key.
v5.5 [Sep 24, 2021]
• Added support for Xcode 13 and Swift 5.5
• Now you can switch between the Swift 5.5 and Swift 5.4 outputs in the Preferences dialog
• Allow interchangeable use of CGFloat and Double types