What you need for this book

A laptop or desktop and (optionally) a mobile device running one of the major mobile operating systems. The instructions in this book assume that you use the Chrome browser and Apple products, but the development tools are cross-platform, so any of the major browsers or operating systems should suffice.

If you want to deploy your app to an iOS device, you will need to purchase an Apple Developer membership. We will discuss the details of this in Chapter 2, Building a To-do App.