i. What You Need

To follow along with this book, you’ll need the following:

• A Mac running macOS Mojave (10.14) or later. Earlier versions might work, but they’re untested.
• Xcode 11 or later. Xcode is the main development tool for iOS. You’ll need Xcode 11 or later for the tasks in this book. You can download the latest version of Xcode from Apple’s developer site here: apple.co/2asi58y

If you want to try things out on a physical iOS device, you’ll need a developer account with Apple, which you can obtain for free. However, all the sample projects in this book will work just fine in the iOS Simulator bundled with Xcode, so a paid developer account is completely optional.