In-depth guides to
React and React Native

Callstack’s Ultimate Guide to React Native Optimization has become a trusted reference for React Native teams. This refreshed edition is built around the problems engineers are dealing with now: slow startup, dropped frames, re-renders, memory leaks, thread boundaries, and bundle bloat.

• Built around practical performance work, not generic advice
• Covers runtime smoothness and startup speed
• Updated for the New Architecture and current React Native tooling
• Written for developers, senior engineers, and tech leads

If you already build with React Native, Meta Quest is a new platform you can reach without switching stacks. Because Meta Horizon OS is built on Android, React Native works where you’d expect: same workflow, same core abstractions, new form factor. VR changes the interface, not the fundamentals.

This hands-on guide shows you how to bring a real React Native app to Meta Quest, from setup and library choices to productive workflows and a store-ready release. Read it to find out how to:

• Build and run a React Native app on Meta Quest using Expo Go and development builds
• Understand what changes on Meta Horizon OS (permissions, input, performance)
• Choose compatible libraries and swap in Quest-ready alternatives
• Explore high-signal app categories that make sense in VR
• Debug, profile, and integrate native modules with standard RN workflows
• Create a store-ready build and publish it through Meta’s submission pipeline

Modern TV platforms share familiar foundations yet behave unlike any other device class. This guide gives you a clear path through that landscape, from understanding the hardware and operating systems to designing effective 10-foot interfaces, managing focus, streaming video reliably, and preparing an app for production at scale.

You’ll learn how React Native fits into the TV ecosystem, how to build for platforms like tvOS, Android TV, Tizen, and webOS, and how to navigate the practical engineering challenges behind living-room experiences.

• Understand the TV ecosystem and its platform constraints
• Design interfaces for the 10-foot experience and remote-driven navigation
• Build performant TV apps using React Native and react-native-tvos
• Implement video playback, accessibility, focus management, and testing strategies

Written by engineers at Callstack and Amazon with deep experience in cross-platform development, this guide helps teams use their React skills to ship consistent, reliable TV apps across devices.

This guide is for iOS and Android teams who want to experiment with React Native gradually, without slowing delivery or rewriting the whole app.

You’ll get:

• A side-by-side look at legacy vs. modern integration approaches
• How the Packaging Approach and React Native Brownfield library simplify setup
• Step-by-step walkthroughs for iOS and Android
• Real-world migration insights from the Callstack team

This guide will help you bring React Native into production safely and incrementally.

From struggling with slow app load times to inefficient user interactions, performance issues can harm your business and frustrate your users. This ebook presents a structured, data-driven approach, DMAIC-to diagnose, address, and sustain performance improvements in React Native applications. Based on a detailed real-world case study, you'll learn precisely how DMAIC can help achieve measurable enhancements:

• Cut down app start times drastically.
• Accelerate critical user interactions.
• Maintain consistent performance through continuous monitoring.

Authored by Callstack's software engineers, this ebook provides actionable guidance to significantly boost your application's speed, efficiency, and overall user experience.

The challenges organizations face when migrating to React Native often feel familiar. In this guide, we detail three proven scenarios for adopting React Native, each illustrated by real-world examples from global enterprises. Discover how React Native can transform your applications effectively and safely, without disrupting business operations. Here's what you'll read about if you download it:

• Validating React Native viability with a real-world Proof of Concept.
• Consolidating development through hybrid migrations.
• Replacing siloed native code with reusable React Native components.

Authored by Michał Pierzchała and with the input of software engineers working on brownfield projects on a daily basis, this guide provides clear instructions for implementing incremental React Native adoption in your organization.