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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.

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Past events

Explore talks and live streamed events from the past, packed with engineering insights from Callstackers who shape modern cross-platform app development.

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Insight Page
Testing
Talk
12/9/2025

Write Once, Test Everywhere: Cross-Platform Testing for React Native

Join Szymon Chmal at WarsawJS #133 to explore cross-platform testing in React Native with a new approach powered by React Native Harness.
Szymon Chmal
Insight Page
AI
Talk
12/5/2025

The Offline AI: On-Device LLMs in React Native With AI SDK

Learn how to run on-device LLMs in React Native using Vercel’s AI SDK from Michał Pierzchała's talk at DevAI by Data Science Summit.
Michał Pierzchala
Insight Page
AI
Talk
11/28/2025

How to Run Any LLM On-Device With React Native

In this talk, Szymon will show how to run LLMs directly inside React Native apps using an AI SDK that provides a powerful abstraction layer to simplify building AI applications. Join him as he explores react-native-ai, a library that enables local LLM execution.
Szymon Rybczak
Insight Page
Developer Experience
Talk
11/28/2025

How I Hacked React Native DevTools (And Built a Plugin Framework)

Learn how React Native DevTools work under the hood, and how to inject custom plugins with clean hooks and no forks.
Szymon Chmal
Insight Page
Brownfield
Talk
11/17/2025

Vega Developer Meetup

Learn how to integrate React Native into Android TV apps at the Vega Developer Meetup. Workshop, roadmap, and community talks, live in Munich.
Michał Pierzchala
Eric Fahsl
Artur Morys-Magiera
Insight Page
Testing
Talk
11/14/2025

Testing Native Modules Reliably With JavaScript

Learn how React Native Harness bridges the gap between mocking and E2E testing: real device tests, full native access, Jest-style simplicity.
Michał Pierzchala
Insight Page
Cross-Platform
Talk
11/12/2025

My First Few Months With Lynx.js

Is Lynx.js the next big thing in UI? Łukasz shares a newcomer's journey with the framework from TikTok's creators, revealing the good, the bad, and crucial lessons he learned.
Łukasz Chludziński
Insight Page
Brownfield
Talk
10/8/2025

React Everywhere: Bringing React Into Native Apps

Most teams use React on the web but still rely on native code or WebViews in their mobile apps. This talk explores how React Native can replace WebViews with minimal effort, allowing React to power both web and mobile.
Mike Grabowski
Insight Page
React Native
Conference
10/7/2025

React Conf 2025

We’re thrilled to announce that Callstack is once again co-hosting React Conf 2025 with Meta!
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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
12/12/2025

How to Cleanly Swap Between React Native Storybook 10 and Your App

Set up React Native Storybook 10 with Expo or the Community CLI. Learn configuration steps, updated tools and a simple workflow for toggling Storybook.
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Article
12/8/2025

Mobile vs. VR: Key Differences in Features, UI, and UX

Explore how VR reshapes layout behavior, typography, spacing, accessibility expectations, and interaction patterns in React Native.
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Article
12/2/2025

Deep Links With Authentication in React Navigation

Learn various approaches to how to make deep links work when the screen is behind authentication in React Navigation.
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Article
11/25/2025

Integrating Swift Package Manager With React Native Libraries

Learn how to use Swift Package Manager with React Native libraries, including support for both remote and local SPM packages. This guide explains the spm_dependency helper, monorepo workflows, and current limitations.
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Article
11/21/2025

Memory Ownership Models: When JavaScript Meets Native Code

A deep dive into how React Native handles memory when JavaScript and native code share ArrayBuffer data. Learn why async processing can break, how GC affects raw pointers, and the safe patterns for building high-performance native integrations.
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Article
11/20/2025

How to Release a React Native App on the Meta Horizon Store

Learn how to build, submit, and publish your React Native app on the Meta Horizon Store.
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Live Stream
Live Stream
12/11/2025

React Native 0.83: A Stability-Focused Release With Surprisingly Big Quality-of-Life Wins

Join Łukasz Kewin for a walkthrough of React Native 0.83, recent ecosystem news, and hands-on demos.
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Talk
Talk
12/5/2025

The Offline AI: On-Device LLMs in React Native With AI SDK

Learn how to run on-device LLMs in React Native using Vercel’s AI SDK from Michał Pierzchała's talk at DevAI by Data Science Summit.
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Live Stream
Live Stream
12/4/2025

React Native on Meta Quest: What We Learned About Building for VR

See Meta Quest used as a practical dev setup and watch the team build and test React Native features directly inside a VR workspace.
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Podcast
12/9/2025

From Hobby Tool to Default: Expo's Journey and the New App Awards

Jon Samp (Expo) discusses the framework's evolution since becoming the React Native default, the death of the "eject" mentality, and the launch of the Expo App Awards.
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Podcast
12/4/2025

From Static Hermes to Hermes V1: The Road to Default

Nicola Corti (Meta) explains the evolution of Static Hermes into Hermes V1, the performance boosts it ships, and the (experimental) path to making it the new default engine.
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Podcast
11/27/2025

From React Native Web to React Strict DOM

Nicolas Gallagher (Meta) explains how React Strict DOM evolved from React Native Web, providing a shared syntax that compiles to native or web with zero overhead.