How to integrate a web application with a mobile application?

Question

API

Developed a news portal. Posting information, etc. There is work with API maps, social and so on.
Tell me how to make a mobile application based on it? a simple reader similar to the habra reader without authorization, and so on.
I imagine that you need to write an API and so on.
What can you advise? and Maybe what resources?

Answer 1

Make an RSS Feed Atom on the website.
There are plenty of readers.