“We’re happy to announce a new capability of Google Search, called app indexing, that uses the expertise of webmasters to help create a seamless user experience across websites and mobile apps,” Google noted in a blog post.
Just like it crawls and indexes websites, Googlebot can now index content in your Android app. Webmasters will be able to indicate which app content you’d like Google to index in the same way you do for webpages today — through your existing Sitemap file and through Webmaster Tools. If both the webpage and the app contents are successfully indexed, Google will then try to show deep links to your app straight in our search results when we think they’re relevant for the user’s query and if the user has the app installed. When users tap on these deep links, your app will launch and take them directly to the content they need. Here’s an example of a search for home listings in Mountain View:
Google is presently testing app indexing and deep links for applications will start appearing in the Google search results only for the signed-in users on Android in US in the coming few weeks.
Google has also shared getting started instructions with those who are interested in enabling indexing on Android app. Click here