Great writeup from Zynga about the tools they use to monitor bugs and crashes in their app. If you never had a chance to read their in-depth article from last year about why they chose React Native, that one is also worth your time.
The first part in a tutorial created by yours truly highlighting a way to roll your own forms with validation by using only one platform-agnostic external dependency. Appreciate any and all feedback or questions.
After two years of experience working in React Native, Maxence shares some well-written insights on how to improve performance in your apps.
A well designed tutorial from Hasura to help you get started on using GraphQL with Apollo in your application. If you're interested in GraphQL but don't know where to get started, this tutorial should take less than two hours to get you up and running.
Not specific to React Native - but Aman wrote a great article on best practices for building out a large React application. Certainly everyone has opinions on this topic - but you may learn some new pattern ideas by giving this a look.