Android apps have an applicationId that looks like com.example.app. I'm currently looking at how to correctly define one as this cannot be changed after release. In particular since we also have a website what I'm interested about is the relation between the website URL and the application id, since it seems that it affects SEO.
Let's say that our website is http://example.com. I thought that naturally the applicationId should be com.example (only two segments).
However the following link tells the following recommendation regarding appId:
example: com.example.app
We recommend adding app or android as a postfix for main project/company apps as in the example above.
Why is that ?
The more likely it is unique, the better. Using 2 segment is the minumum requirement but using 3 segment is ideal for more guarantee way for unique identifier (look like java packages). There is nothing to worry about it. Do com.example.myapp and pass it. Such as I use like that: com.mycompanyname.myprojectname