//
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.

JavaScript
6/26/2025

React Native Legal: CLI & programmatic API - unified tooling for license attributions

Discover React Native Legal, the first unified solution for managing open-source license attributions. Automatically handle both JS & native dependencies in any project via a powerful CLI and programmatic API.

Artur Morys-Magiera

Software Engineer

@

Callstack

Read more
Pick category
Clear all
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
CI/CD
6/19/2025

Caching React Native builds on S3 and R2 with RNEF

One of the core reasons we built RNEF (React Native Enterprise Framework) was to eliminate unnecessary native iOS and Android builds by reusing existing artifacts: saving time, compute, and cost. Until now, remote caching was tied to GitHub, which limited flexibility. The latest release changes that: RNEF now supports AWS S3 and Cloudflare R2, allowing teams to store and retrieve native builds from their own infrastructure. This unlocks a much more powerful setup for enterprise teams with custom CI or compliance needs.

Michał Pierzchala

Principal Engineer

@

Callstack

Read more
AI
6/4/2025

How I Used MCP to Control My Friend's Home

Curious about Model Context Protocol? This post shows how MCP helps LLMs like Claude access real-world data. You'll follow a real use case-connecting a smart home API to Claude using a Node server-to see what MCP enables, how it works, and why it is the USB-C of AI tooling.

Kewin Wereszczyński

Software Engineer

@

Callstack

Read more
AI
5/28/2025

Want to Run LLMs on Your Device? Meet MLC

Running LLMs locally on mobile isn’t a fantasy-it’s possible with MLC. This post explains how MLC compiles both model and runtime to create optimized, cross-platform packages for local inference. Discover what’s required, how it works, and why MLC stands out among edge ML frameworks.

Kewin Wereszczyński

Software Engineer

@

Callstack

Read more
Performance
5/21/2025

Multithreading Isn’t Free: Performance Pitfalls Visualized

This article walks through real-world examples of profiling multithreaded C++ code. It shows what happens when you throw too many threads at a problem, how to measure performance with Tracy, and why smarter scheduling beats brute force. While the code is in C++, the takeaways apply to any performance-critical system.

Mariusz Pasiński

Software Engineer

@

Callstack

Read more
AI
5/15/2025

Meet react-native-ai: LLMs Running on Mobile, for Real

Running AI models locally in React Native used to sound impossible, but not anymore. This post introduces react-native-ai, a new library powered by MLC and integrated with Vercel AI SDK, enabling on-device LLM inference with a web-like API and native performance.

Szymon Rybczak

Software Developer

@

Callstack

Read more
Super Apps
5/14/2025

New in Re.Pack 5.1: Preloading Remotes, Runtime Hooks, and Faster Startups

This release of Re.Pack adds runtime hooks for customisation of script loading, support for prefetching of Module Federation 2 remote modules, and experimental faster hot startups via persistent cache. It also ensures full compatibility with React Native 0.79 and improves support for module resolution with Package Exports.

Jakub Romańczyk

Software Engineer

@

Callstack

Read more
Open Source
5/13/2025

React Native Legal: Zero-Config OSS License Screens for Your App

Open-source libraries power all React Native apps, but many devs overlook the need to acknowledge them inside the app itself. This post introduces React Native Legal, a zero-config tool that generates license metadata and adds a native-style license screen across iOS, Android, tvOS, and AndroidTV.

Michał Pierzchala

Principal Engineer

@

Callstack

Read more
Brownfield
4/28/2025

Powering Native Apps with React Native Brownfield

This article introduces the brownfield approach, explaining how it allows you to bring React Native into existing native apps without starting from scratch. It then covers how our library, React Native Brownfield, simplifies this process by embedding React Native screens into native apps, and provides an overview of its structure and key features.

Burak Güner

Software Developer

@

Callstack

Read more
Performance
4/11/2025

Profiling React Native Internals with Tracy for Peak Performance

Profiling React Native's internals can uncover bottlenecks and provide deep insights into native behavior. This guide walks through using the Tracy profiler to instrument React Native code, collect performance metrics, and identify optimization opportunities across iOS and Android.

Mariusz Pasiński

Software Engineer

@

Callstack

Read more
Performance
3/20/2025

Why Knowing Your App’s Bundle Contents Matters for React Native Performance

Slow app startup times can frustrate users, especially on older devices or slower networks. Expo Atlas helps you peek inside your React Native app bundle to identify large dependencies and optimize performance, even if you're not using Expo.

Szymon Chmal

Software Developer

@

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
6/26/2025

React Native Legal: CLI & programmatic API - unified tooling for license attributions

Discover React Native Legal, the first unified solution for managing open-source license attributions. Automatically handle both JS & native dependencies in any project via a powerful CLI and programmatic API.
cover
Article
6/19/2025

Caching React Native builds on S3 and R2 with RNEF

Learn how to cache your React Native builds and store them on Amazon S3 or R2 to reuse across your team
cover
Article
6/4/2025

How I Used MCP to Control My Friend's Home

Learn how MCP works with a hands-on project that connects Claude AI to smart home data using a Node.js server.
cover
Article
5/28/2025

Want to Run LLMs on Your Device? Meet MLC

Find out how MLC compiles both model and runtime for efficient local LLM inference, and what that means for running AI on your Android or iOS app.
cover
Article
5/21/2025

Multithreading Isn’t Free: Performance Pitfalls Visualized

Learn how to profile and optimize multithreaded apps. Discover why more threads don’t always mean faster results and how bad thread contention really is.
cover
Article
5/15/2025

Meet react-native-ai: LLMs Running on Mobile, for Real

Run AI models on-device in React Native apps using the new react-native-ai library, powered by MLC and Vercel AI SDK. Learn how it works and why it matters.
cover
Live Stream
Live Stream
7/3/2025

Live Dev Session: React, React Native & Whatever Else We Click On

React & React Native live stream: new tools, news, coding experiments, and developer opinions. Raw, unscripted, and full of real-time insights.
cover
Live Stream
Live Stream
6/27/2025

React & Next.js Updates From Vercel Ship 2025

Vercel Ship 2025 recap, live. Join us as we unpack updates, test new tools, and share what matters most to React & Next.js devs.
cover
Meetup
Meetup
6/24/2025

React Universe Meetup, New York

Join us in NYC or online for React Universe Meetup: tech talks, real-world insights, and networking with React Native devs. June 24, 2025.
cover
Podcast
6/12/2025

Build Faster and Scale Smarter With React Native Enterprise Framework

Discover how React Native Enterprise Framework cuts build times, streamlines CI, and simplifies large-scale app development for growing teams.
cover
Podcast
5/16/2025

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

Discover how modern React Native Brownfield integration enables cross-platform power in native apps, without rewriting from scratch.
cover
Podcast
4/9/2025

Exploring TanStack Ecosystem: From React Query to TanStack Start

Tanner Linsley breaks down TanStack’s evolution-from React Query to Start, and why client-first React apps still matter in today’s full-stack landscape.