How and with what to wrap the site in an Android application?

Question

Android

There is a site spursarmy.com which I often visit from my smartphone.
They have a mobile version but I don't like it.
I had an idea to make an application for myself, so that everything would be as convenient for me.
As I planned: to write a program in java for a PC, so that once in a certain period of time it would parse the site for updates, pack the necessary information into json and send a push to the android application.
So the question is: what is the best way to parse and pack it all?

Answer 1

Forgive me for being a bit off topic, but it seems to me that it will be useful just to practice creating this kind of application, because:

1. Websites are a dynamic thing now, you constantly have to tweak your parser to keep up with changes in the structure of the site. And there will almost certainly be changes.
   
2. And isn't it easier to ask the site developers to add the missing information to you? Well, or somehow cooperate with them. Perhaps they will find your structure convenient for everyone and will make one themselves (and will support it).
   
3. Or maybe the developers will share the site's open API (if it exists) for information so that you can write an application.
   

Answer 2

Maybe it's better to agree with the site on the creation of a mobile application? Dofiga work, IMHO, without material profit, you will quickly score on this, you will just lose time.
On the topic - parse with anything - I'm not special in this, but the first thing I googled is Jsoup. Push is to firebase.