Ever tried searching flights tickets from Google Search on mobile? The search results would include listings which are similar to the one below:
It shows a list of apps that might help you book tickets online. In fact, Google takes this search to another level by showing apps that you have on your device and which can help you plan. In this case, we had Cleartrip app installed and it showed an option Open On Cleartrip.com:
In short, if the app is installed when users search for related content, they will launch the app directly from the search results. Android apps support HTTP URLs and use association to verify the relationship between an app and its website. Once this association is verified, Google search indexes URLs that work for both, your site as well as your app, right from the search results.
Take a look at some of the App indexing options provided by Google...