Download the PDF Version of Xcode vs Swift Xcode and Swift, both were developed by Apple. The Instruments window appears showing a collection of templates. To use this tool, follow these steps: Choose Xcode→Open Developer Tool→Instruments. Here is the direct link to Xcode 10.1 (requires Apple login)
If you're using Mac OS High Sierra, you are required to use Xcode 10.1 for compatibility.