I need to create a new android an iOS app that contains the information of some Crypto blogs.

Hi all, 
I need to create a new app where I can put all the information about Crypto, Bitcoin, and Blockchain. In this scenario, I want to crawl a few blogs that are specially built for crypto and Blockchain information. Like **_[BriansClub](https://brlansclub.cm/)_**.
What would be the best practice for this?