This is how the interface looks like/works, when logged in.

https://www.adhyeta.org.in/a/images/z85.png (ruby annotations can be seen floating above the source text)

https://www.adhyeta.org.in/a/images/z88.png

The "app" is laid out exactly the same way as the www version is. The only difference is that it provides tools to manipulate the status of words. Login is required because vocabulary progress has to be tracked on a per-user basis.