What you need for this book
In order to follow along with this book, you'll need a computer running Mac OS X 10.10 or later with Xcode 8 installed (free on the Mac App Store). In Chapter 5, we will also be using GitHub Desktop, which is a free download from the https://github.com/ website.
To get the most out of the book, you'll also need a recent iOS device (iPhone 6S or newer for the 3D touch segments) and a lightning cable to connect it to your computer. In the final chapter, you will need a paid ($99) Apple Developer Account to follow along with submitting an app to TestFlight and the App Store.