//
Articles

Articles for developers, by developers

Technical insights from building React and React Native production-grade apps, contributing to core libraries, and solving complex cross-platform challenges.

Super Apps
8/27/2025

Re.Pack 5.2: Faster Babel Transforms, RN 0.80 & 0.81, Rozenite

Re.Pack 5.2 is out! This release focuses on parallel, smarter transforms with a new Babel & SWC loader, official support for React Native 0.80 and 0.81, fully typed configs, support for Rozenite and more.

Jakub Romańczyk

Software Engineer

@

Callstack

Read more
Pick category
Clear all
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
AI
8/21/2025

On-Device Text To Speech on Apple Devices with AI SDK

We’ve added on-device speech synthesis to our Apple provider for the AI SDK, completing the feature set alongside generation, embeddings, and transcription. This integration with AVSpeechSynthesizer brings fast, private, and offline text-to-speech to React Native, with support for multiple voices, languages, and even Personal Voice on iOS 17+.

Mike Grabowski

CTO & Founder

@

Callstack

Read more
Security
8/20/2025

Secure Communication Between Isolated React Native Instances

The latest release of react-native-sandbox adds support for direct, secure communication between sandboxed React Native instances. Instead of routing messages through the host app, sandboxes can now talk to each other directly using a model familiar from the web: the postMessage API with origin-based access control.

Aliaksandr Babrykovich

Senior C++ Engineer

@

Callstack

Read more
Enterprise
8/18/2025

React Native Enterprise Framework is now Rock

Meet Rock: the evolution of the React Native Enterprise Framework. Built by Callstack, Rock gives teams a stable, high-performance foundation for enterprise React Native development. From powerful build caching that cuts CI times by up to 96%, to ad-hoc iOS installs and an ecosystem of upcoming tools like Rozenite and Ottrelite, Rock is designed to help enterprises scale React Native with speed, reliability, and confidence.

Michał Pierzchala

Principal Engineer

@

Callstack

Read more
Open Source
8/7/2025

Visualizing Open Source Licenses to Analyze Compliance and Reduce Legal Risk

Tracking open-source licenses isn’t just about reading package.json. Hidden obligations often live deep in transitive dependencies. license-kit visualize offers a clear, interactive map of your project’s dependency graph, complete with license details, statistics, and AI-generated summaries. Whether you’re avoiding restrictive terms or understanding how packages enter your stack, this tool gives you the visibility you need to manage licenses with confidence.

Artur Morys-Magiera

Software Engineer

@

Callstack

Read more
AI
8/6/2025

On-Device Speech Transcription in React Native with Apple SpeechAnalyzer

This post introduces speech transcription support in React Native AI, implemented using Apple’s SpeechAnalyzer and SpeechTranscriber APIs available in iOS 26. It explains how to use the AI SDK’s transcribe function to pass audio buffers, how modular analysis is configured through the SpeechAnalyzer class, and how system-level asset management ensures models are handled outside the app bundle.

Mike Grabowski

CTO & Founder

@

Callstack

Read more
Cross-Platform
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

Read more
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

Read more
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 & Founder

@

Callstack

Read more
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 Rock. With device-scoped views and isomorphic communication, Rozenite empowers developers to streamline observability and scale tooling fast.

Szymon Chmal

Software Developer

@

Callstack

Read more
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 & Founder

@

Callstack

Read more
Sorry, nothing to see here...
Try different category or just safely check all.
See All
//
Hire us

Need React or React Native
expertise you can count on?

We’ve spent years building full-stack, cross-platform apps and solving tough technical challenges. How can we help you?

Let's talk
//
Insights

Your next read or watch starts here

Stay up to date with our latest insights on React, React Native, and cross-platform development from the people who build the technology and scale with it daily.

View all
Sort
cover
Article
8/27/2025

Re.Pack 5.2: Faster Babel Transforms, RN 0.80 & 0.81, Rozenite

This release focuses on parallel, smarter transforms with a new Babel & SWC loader, official support for React Native 0.80 and 0.81, fully typed configs, support for Rozenite and more
cover
Article
8/21/2025

On-Device Text To Speech on Apple Devices with AI SDK

On-device speech synthesis is now available in the AI SDK for React Native. Powered by Apple’s AVSpeechSynthesizer, it delivers private, low-latency text-to-speech with rich voice options and offline support.
cover
Article
8/20/2025

Secure Communication Between Isolated React Native Instances

react-native-sandbox now supports secure, direct communication between sandboxed React Native instances, modeled after the web’s postMessage API with origin-based access control.
cover
Article
8/18/2025

React Native Enterprise Framework is now Rock

Rock is the new name for the React Native Enterprise Framework (RNEF). A solid foundation for enterprise-grade, cross-platform apps. Faster CI, build caching, iOS ad-hoc installs, and more.
cover
Article
8/7/2025

Visualizing Open Source Licenses to Analyze Compliance and Reduce Legal Risk

Discover how license-kit visualize maps and analyzes your dependency graph, helping you spot license issues, duplicates, and restrictive packages with interactive views, stats, and AI-powered summaries.
cover
Article
8/6/2025

On-Device Speech Transcription in React Native with Apple SpeechAnalyzer

Add speech-to-text features to your React Native app using Apple’s SpeechAnalyzer and SpeechTranscriber APIs in iOS 26. Runs entirely on-device, with system-managed language models and support for multiple languages.
cover
Live Stream
Live Stream
8/28/2025

Live Dev Session: Routers, React Native AI, and Expo Launch

Nuqs 2.5, Remix v3, Expo Launch, SPM support in React Native, the Jest RFC, and native Text-to-Speech with guest insights from Mike Grabowski.
cover
Live Stream
Live Stream
8/21/2025

Live Dev Session: Expo SDK 54 Beta Is Here, Next.js 15.5, RNEF Renamed Rock

Explore what's new in Expo SDK 54 Beta: Liquid Glass, faster iOS builds, RN 0.81, and more dev upgrades from this week's livestream.
cover
Live Stream
Live Stream
8/14/2025

Live Dev Session: React Native 0.81 Is Here! Faster Builds, API Changes, and What You Need to Know

React Native 0.81 slashes iOS build times with prebuilt binaries, adds Android 16 support, deprecates SafeArea, and shifts JSC to community maintenance.
cover
Podcast
8/13/2025

Observability and OpenTelemetry in React Native

Learn how Embrace and OpenTelemetry can help React Native teams standardize observability and improve app monitoring across platforms.
cover
Podcast
7/16/2025

Structure Monorepo for Speed, Scale & Sanity

Discover how Nx empowers teams to build and scale monorepos without losing their sanity, from selective testing to AI-powered workflows.
cover
Podcast
6/12/2025

Build Faster and Scale Smarter With Rock

Discover how Rock cuts build times, streamlines CI, and simplifies large-scale app development for growing teams.