We have seen how to directly monetize our application by either setting a price, making it a paid application, or by adding in-app purchases to unlock new features, remove advertisements, or add some benefits in exchange for a microtransaction. Now we will see how to add a more indirect monetizing mechanism, such as adding advertisements. By adding advertisements to our application, we will not charge our end user, but we will get money by the amount of advertisements shown and clicked by the users of our application.

If we are able to generate a lot of advertisement impressions or make our advertisements non-intrusive and useful to the targeted users, it can be a good way to earn some money, even more than by paid apps or in-app purchases.

In this section, we will see how to add advertisements to our app. We will focus on Google Admob although there are many other advertisement providers. At the end of the day, the approach will be quite similar, and most probably, we will...