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Events

Where we share what we learn

Stay connected with our team through events, talks, and workshops. Check out what’s coming next or browse recordings from past sessions.

Conference
Warsaw | Poland
Online
Agent Conf

Join 500+ engineers in Warsaw Sept 17-18 2026 for Agent Conf. Learn agentic development, orchestration, and AI-driven workflows.

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Talk
Miami, United States
Online
Ambient Generative AI: Deploying Latent Diffusion Models on Mobile NPUs

Join Lech Kalinowski at AI Engineer Miami on April 20–21 for a talk on running offline latent diffusion models on mobile NPUs.

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Talk
Florida, United States
Online
State of Brownfield in React Native

A practical look at Brownfield React Native adoption in mature native apps, architecture, tooling, and real-world tradeoffs.

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Talk
Florida, United States
Online
Shipping iOS Live Activities with React: The Voltra Story

How Voltra enables Live Activities and Dynamic Island views using React without writing Swift. A deep dive into iOS constraints and architecture.

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Insight Page
React Native
Meetup
4/24/2025

React Universe Meetup: San Francisco

Missed the React Universe Meetup SF? Watch the livestream recording soon, talks on RN performance, optimization, and build-free workflows await.
Oskar Kwaśniewski
Tim Golen
Michał Pierzchala
Mike Grabowski
Insight Page
Performance
Talk
4/24/2025

Tips & Tricks From The Ultimate Guide to React Native Optimization 2025

View flattening, React 19 hooks, real DevTools tips-learn what actually helps your React Native app run faster.
Oskar Kwaśniewski
Insight Page
Performance
Talk
4/24/2025

User-Focused Performance Tracking

Discover how Expensify defines and tracks performance metrics that actually impact user experience.
Tim Golen
Insight Page
Cross-Platform
Talk
4/16/2025

Bring Your Favorite Language to React Native

Learn how to integrate native libraries in React Native, without TurboModules. Robert shares a practical approach using WebAssembly and introduces PolyGen.
Robert Pasiński
Insight Page
Animations
Talk
4/16/2025

How to Make Your React (Native) App Feel Native

How to make your React Native app feel truly native, across iOS, Android, tvOS & more. Dive into best practices, navigation, and react-native-bottom-tabs.
Oskar Kwaśniewski
Insight Page
React Native
Talk
4/16/2025

I Built a File-Based Router for React Native

A deep dive into building a file-based router for React Native using Metro’s hidden APIs, dynamic routing, loading states, and smart hacks included.
Szymon Chmal
Insight Page
Testing
Talk
4/1/2025

How to Run E2E Tests on Every PR and Don’t Burn All Your CI Credits

End-to-end tests are notoriously slow and costly, especially in mobile development. This talk introduces new tools and techniques to make E2E testing fast and efficient, so you can run tests on every pull request without draining CI resources.
Michał Pierzchala
Insight Page
Performance
Talk
3/26/2025

Running WASM in React Native Apps

Find out about executing WASM in React Native, the challenges of JIT restrictions on iOS, and how Callstack's wasm2c solution enables performant native modules.
Kræn Hansen
Robert Pasiński
Insight Page
Super Apps
Talk
3/25/2025

Re.Pack 5: Unlocking New Possibilities With Rspack and Module Federation 2

Learn about the new features we shipped in Re.Pack 5 and how you can use them to level up your micro frontends game in React Native.
Jakub Romańczyk
Insight Page
Next.js
Talk
10/25/2024

Astro – Island Technology in the Name of Optimization

Next.js is the default choice, but Astro offers strong competition in some areas. Let's compare their features and differences.
Szymon Chmal
Insight Page
VisionOS
Talk
9/7/2024

React Native ❤️ Apple Vision Pro

In this talk, Oskar talks about bringing React Native to Vision Pro and building VR apps with React
Oskar Kwaśniewski
Insight Page
React Native
Conference
9/5/2024

React Universe Conf 2024

Relive React Universe Conf 2024, from talks to stories from the React and React Native community shaping the future of app development.
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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.

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Article
3/18/2026

A Practical Guide to LLM Model Naming Conventions

Learn how to read LLM naming conventions and choose the right model for your hardware. Discover what Q4, INT8, GPTQ, and GGUF mean and why models appear in multiple variants.
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Article
3/13/2026

Handling Navigation in React Native Brownfield Apps

Learn how to connect React Native and native navigation using a typed bridge with @callstack/brownfield-navigation.
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Article
3/5/2026

Announcing React Native Evals

We built an open-source benchmark to measure how AI coding models handle real React Native tasks, such as animations, async state, navigation, and more.
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Article
3/5/2026

Keeping Screens Visible With <Activity mode="hidden">

A cross‑platform workaround to keep screens visible while <Activity mode="hidden"> unmounts effects on inactive screens by setting mode="hidden".
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Article
3/3/2026

Building Apps Where AI Generates the UI

Most AI apps stop at chat. This article explores generative UI: letting the model describe the interface at runtime and rendering it dynamically in React using JSON Render. Includes architecture, code examples, and a real project case study.
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Article
2/27/2026

Sparkling: The Missing App Layer for Lynx.js?

A hands-on look at Sparkling for Lynx.js: CLI, native navigation, and the tooling layer that turns Lynx into a full mobile app framework.
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Live Stream
Live Stream
3/19/2026

Agent Device, AI workflows, and mobile testing in practice

A discussion on Agent Device, AI-driven workflows, and testing mobile apps using simulators and accessibility data.
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Live Stream
Live Stream
3/12/2026

React Native Evals: Measuring AI Code Quality in Practice

React Native Evals introduces a data-driven way to measure how AI coding models perform on real React Native development tasks.
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Talk
Talk
3/4/2026

The Safe Detonation Chamber: Building AI You Can Actually Ship

How to design production AI systems using Vercel AI SDK, Workflows, and Sandbox , covering vendor lock‑in, long‑running workflows, and secure code execution.
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Podcast
2/17/2026

From Teddy Bears to Voice Agents: Kraen Hansen on Voice AI, Local-First & App Security

What happens when you combine voice agents and teddy bears? A hands-on look at local-first systems, voice AI, and security lessons from poking real apps.
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Podcast
1/12/2026

Building v0 iOS and Fixing React Native Along the Way

A technical look at building v0 mobile with React Native and Expo, covering iOS-first decisions, native modules, and fixes pushed to React Native core. Featuring Fernando Rojo, Szymon Rybczak, and Oskar Kwaśniewski.
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Podcast
12/17/2025

A (Secure) Christmas Carol: The Story of Npmezer Scrooge

A holiday story about npm audits, unpinned dependencies, and the real cost of ignoring JavaScript security warnings.
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Tutorial
March 19, 2026

The Hard Way vs. The React Native AI SDK Way: Stop Writing Custom Modules for Every Model

Learn how React Native AI uses a unified provider model to switch between cloud and on-device LLMs without rewriting application logic, enabling reliable AI experiences online and offline.
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Tutorial
March 12, 2026

Build Smarter Apps: Tool Calling & AI Orchestration Explained

Learn how on-device models in React Native can call tools, interact with external APIs, and return structured outputs you can use directly in application logic.
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Tutorial
March 5, 2026

MLC LLM + React Native: On-Device AI Without the Pain

Learn how to run third-party on-device LLMs in React Native using MLC LLM. Choose your models, run them efficiently across platforms, and keep a unified JavaScript API with React Native AI.
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Tutorial
February 24, 2026

Intelligent Fallbacks with Apple Intelligence in React Native

Learn how to use Apple’s built-in Foundation Models in React Native apps, reduce memory usage, and enable fast, fully on-device AI with React Native AI Apple.
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Tutorial
February 10, 2026

What Is the React Native AI SDK? A Complete Intro & Quickstart

Learn why on-device AI matters for React Native apps, how local LLMs behave offline, and what problems React Native AI is designed to solve from day one.
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Tutorial
January 29, 2026

Implementing an Android TurboModule with Kotlin

Learn how to implement a React Native TurboModule on Android, from the TypeScript spec and Codegen to the Kotlin implementation and package registration.
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Tutorial
January 19, 2026

Working with Different Threads in Swift TurboModules

Learn how JavaScript, native module, background, and main threads interact in React Native TurboModules, and how to use GCD queues to run async work safely in Swift.
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Tutorial
January 9, 2026

How to Add Type-Safe Constants to Swift TurboModules

Learn how to expose typed, immutable constants from a Swift TurboModule using Codegen, and get full end-to-end type safety between native and JavaScript.
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Tutorial
December 30, 2025

Adding Event Emitters to Your TurboModule in Swift

Learn how to emit native events from a Swift TurboModule and subscribe to them in JavaScript, including proper memory management and Codegen integration.
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Tutorial
December 22, 2025

Writing Your First TurboModule in Swift

Learn how to build a fully working TurboModule in Swift, integrate it with Codegen, and bridge it through Objective‑C inside an Expo app.