In this chapter, you’ll build a tour guide app for a trip to Paris. Creating a fully functioning
map app might seem really complicated, but App Inventor provides two high-level components to help: the ActivityStarter, which makes it possible for you to launch another
app from your app, including Google Maps, and the WebViewer, which shows any web
page you want within a subpanel of your app. You’ll explore both of these components
and build two dierent versions of a tour guide.