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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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Talk
Gdańsk, Poland
Online
JSX to Live Activity: The Story of Voltra

Learn how Voltra brings React to iOS Live Activities and Dynamic Island by translating JSX into SwiftUI through a custom React renderer.

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Insight Page
React Native
Meetup
1/29/2026

React Universe Meetup x Zalando, Berlin

React Universe Meetup lands in Berlin on January 29, 2026. Join Zalando and Callstack for an onsite React Native-focused evening.
Artur Morys-Magiera
Eugene Verichev
Tejas Kumar
Mohit Karekar
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
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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
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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
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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
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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
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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
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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
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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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Testing
Talk
10/4/2025

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

Cross-platform testing in React Native made simple: a lightweight architecture to run and extend tests on any JavaScript-powered platform.
Łukasz Chludziński
Insight Page
Developer Experience
Talk
9/16/2025

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
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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
1/29/2026

Announcing AI SDK Profiler for React Native

Announcing the AI SDK Profiler plugin for Rozenite DevTools. Capture OpenTelemetry spans from the Vercel AI SDK and inspect AI requests across on-device and cloud providers.
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Article
1/28/2026

Bringing CSS Clipping to React Native

A deep look at how a single CSS feature moves through React Native’s New Architecture, from JavaScript styles to native rendering on iOS and Android.
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Article
1/20/2026

Introducing Brownie: Type-Safe Shared State for React Native Brownfield Apps

A type-safe shared state library for React Native brownfield apps. Brownie syncs native and React state from a single TypeScript schema.
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Article
1/16/2026

Announcing: React Native Best Practices for AI Agents

We're turning React Native optimization knowledge into agent-ready skills (JS, native, bundling) mapped to FPS and TTI, built from real-world production work
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Article
1/13/2026

Live Activities and Widgets with React: Say Hello to Voltra

Voltra lets you build iOS Live Activities and widgets for React Native using JSX instead of Swift.
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Article
12/22/2025

React Native Wrapped 2025: A Month-by-Month Recap of The Year

Seven major React Native releases in 2025, React Native turns 10, the New Architecture becomes the default, and 1.0 moves into view. A recap of 2025’s biggest RN updates.
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Live Stream
Live Stream
1/29/2026

Exploring Skills in Claude: A Live Walkthrough

Live experiments with Claude Skills in a React Native codebase, covering AI agents, Expo upgrades, and practical limits of automation
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Meetup
Meetup
1/29/2026

React Universe Meetup x Zalando, Berlin

React Universe Meetup lands in Berlin on January 29, 2026. Join Zalando and Callstack for an onsite React Native-focused evening.
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Live Stream
Live Stream
1/15/2026

React And React Native: The Year Kick-Off

Start the year with a React and React Native ecosystem catch-up, live coding, and practical insights from Callstack engineers.
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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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Podcast
12/10/2025

Beyond Static vs. Dynamic: Next.js's New Unified Model

Aurora Scharff (Crayon Consulting) explains how Next.js is moving to a unified model that ends the static/dynamic split and helps developers manage Suspense boundaries.