React Native Blog | Technical Articles & Insights

8/5/2025

How Node-API Works in React Native: A Deep Dive

In this deep dive, we explain how Node-API is brought to React Native—from discovering and bundling native addons to loading them at runtime. We also walk through the design of the host system and tools that make it all work.

Kræn Hansen

Software Engineer

@

MongoDB

Super Apps

7/31/2025

Running Multiple Instances of React Native in Sandbox

While micro-frontend architectures have revolutionized feature delivery in React Native, they don't solve the core problem of runtime isolation. This creates security and stability risks, especially when integrating code from third-party developers. This article introduces react-native-sandbox, a powerful library that allows you to run multiple, fully isolated React Native instances inside a single host application. We explore how this sandboxing approach provides true crash containment, configurable security permissions for native modules, and enables independent team delivery, paving the way for truly modular and secure super apps.

Aliaksandr Babrykovich

Senior C++ Engineer

@

Callstack

AI

7/30/2025

On-Device Text Embeddings in React Native With Apple NLP Framework

Our React Native AI library now supports on-device text embeddings by integrating Apple's native Natural Language framework. This implementation leverages the NLContextualEmbedding model built directly into iOS. Because the model is treated as a shared operating system asset, it enables powerful semantic features without requiring developers to bundle large files or force users to perform any extra downloads. We expose this capability through our Vercel AI SDK provider, simplifying integration for React Native developers.

Mike Grabowski

CTO

@

Callstack

Developer Experience

7/28/2025

Introducing Rozenite: A Plugin Framework for React Native DevTools

Rozenite is a new open-source plugin framework for React Native DevTools, designed to help teams build custom debugging panels with ease. It supports TypeScript, React, React Native, and integrates with Expo, CLI, and RNEF. With device-scoped views and isomorphic communication, Rozenite empowers developers to streamline observability and scale tooling fast.

Szymon Chmal

Software Developer

@

Callstack

AI

7/25/2025

Expanding On-Device Apple LLM Capabilities: Introducing Tool Calling

We’ve just added tool calling to our Apple provider for the AI SDK, unlocking the ability to run custom functions directly within Apple’s on-device language model. This means your React Native apps can now generate dynamic, interactive content, like fetching live data or executing app-specific logic, without ever leaving the device.

Mike Grabowski

CTO

@

Callstack

Performance

7/24/2025

Exploring Fibers: Cooperative Multitasking and Lock-Free Task Execution

This third installment in our performance series focuses on building a cooperative, fiber-based task scheduler. We explore what fibers are, how they relate to coroutines, and how to organize tasks using atomic counters instead of traditional locks. You’ll learn how to avoid blocking, manage dependencies across tasks, and profile execution with Tracy. The concepts apply across languages and runtimes, offering a foundation for designing lock-free systems that scale efficiently on modern CPUs.

Mariusz Pasiński

Software Engineer

@

Callstack

React Native

7/21/2025

Performant and Cross-Platform Shimmers in React Native Apps

react-native-fast-shimmer brings high-performance shimmer effects to React Native, offering developers a modern alternative to spinners. Built with SVG and Reanimated, it enables fluid, synchronized animations with minimal overhead, even when rendering many placeholders at once. It is designed for customization and easy integration with Expo, bare React Native apps, as well as other platforms.

Kewin Wereszczyński

Software Engineer

@

Callstack

React Native

7/17/2025

Build and Run Node-API Modules in React Native

Node-API allows you to write native modules that run not only in React Native but also in other JavaScript runtimes like Node.js. In this deep dive, we'll guide you through creating a simple Node-API module, testing it in Node.js, getting it up and running in React Native, and finally, publishing it to npm for wider use.

Jamie Birch

Engineer

@

Scoville, NativeScript TSC

AI

7/14/2025

On-Device Apple LLM Support Comes to React Native

Apple’s on-device LLM is now available in React Native, enabling developers to build private, fast, and offline AI features powered by Foundation Models. This preview release supports text generation, streaming, structured outputs, and first-class support for Vercel AI SDK. A stable version is planned for release alongside iOS 26 later this fall.

Mike Grabowski

CTO

@

Callstack

React Native

7/10/2025

Announcing Node-API Support for React Native

Node-API brings a stable, cross-platform system for building native modules in React Native, enabling faster builds, easier maintenance, and broader language support. Already widely used in Node.js, Deno, and Bun, it allows native code to interface with JavaScript in a runtime-agnostic way. This makes it possible to distribute prebuilt binaries, reuse existing native libraries, and share code across ecosystems. With support for languages like C++, Rust, and Swift, Node-API opens the door to building high-performance modules for tasks like AI, encryption, and platform API access, all without being tied to specific runtime internals.

Kræn Hansen

Software Engineer

@

MongoDB

Articles for developers, by developers

On-Device Speech Transcription in React Native with Apple SpeechAnalyzer

How Node-API Works in React Native: A Deep Dive

Running Multiple Instances of React Native in Sandbox

On-Device Text Embeddings in React Native With Apple NLP Framework

Introducing Rozenite: A Plugin Framework for React Native DevTools

Expanding On-Device Apple LLM Capabilities: Introducing Tool Calling

Exploring Fibers: Cooperative Multitasking and Lock-Free Task Execution

Performant and Cross-Platform Shimmers in React Native Apps

Build and Run Node-API Modules in React Native

On-Device Apple LLM Support Comes to React Native

Announcing Node-API Support for React Native

Need React or React Native
expertise you can count on?

Your next read or watch starts here

On-Device Speech Transcription in React Native with Apple SpeechAnalyzer

How Node-API Works in React Native: A Deep Dive

Running Multiple Instances of React Native in Sandbox

On-Device Text Embeddings in React Native With Apple NLP Framework

Introducing Rozenite: A Plugin Framework for React Native DevTools

Expanding On-Device Apple LLM Capabilities: Introducing Tool Calling

Exploring Fibers: Cooperative Multitasking and Lock-Free Task Execution

Performant and Cross-Platform Shimmers in React Native Apps

Build and Run Node-API Modules in React Native

On-Device Apple LLM Support Comes to React Native

Announcing Node-API Support for React Native

Need React or React Nativeexpertise you can count on?

Your next read or watch starts here

On-Device Speech Transcription in React Native with Apple SpeechAnalyzer

How Node-API Works in React Native: A Deep Dive

Running Multiple Instances of React Native in Sandbox

On-Device Text Embeddings in React Native With Apple NLP Framework

Introducing Rozenite: A Plugin Framework for React Native DevTools

Expanding On-Device Apple LLM Capabilities: Introducing Tool Calling

Live Dev Session: Rozenite DevTools Plugins Framework, Precompiled React Native for iOS, TanStack DB 0.1

Live Dev Session: Reanimated 4, Worklets, React Native Screens

Live Dev Session: Node-API, Wallets & Worklets in React Native

Structure Monorepo for Speed, Scale & Sanity

Build Faster and Scale Smarter With React Native Enterprise Framework

You Don’t Need a Rewrite, You Need React Native Brownfield

Need React or React Native
expertise you can count on?