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Insights

Performance

Performance optimization is crucial for delivering a smooth, responsive experience in React Native applications. Explore techniques for improving startup time, reducing bundle size, optimizing renders, and handling memory efficiently to create applications that delight users across all devices.

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Profiling React Native Internals with Tracy for Peak Performance

Learn how to profile React Native internals with Tracy to uncover bottlenecks, optimize performance, and gain deep insights into your app’s native behavior.

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

Learn why your React Native app’s bundle size matters & how tools like Expo Atlas help you optimize performance, reduce app startup time & improve dependency management.

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How to Profile Native Code in React Native Using Tracy

Learn how to profile your code to uncover performance bottlenecks and optimize speed using the right tools and relevant debugging strategies.

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Optimizing Performance With The React Compiler

Learn how the new React Compiler optimizes performance and reduces development headaches with the power of automation.

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The Inner Workings of GPU Rendering for 2D and 3D Graphics

Discover how GPU rendering powers 2D and 3D graphics. Learn about the GPU's role in creating vibrant visuals on your screen and the process behind it.

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Streamline Native Dependencies for Faster Time-to-Interactive

Learn how to optimize React Native app performance by managing native dependencies effectively. Discover tools to identify and remove unused dependencies.

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How to Optimize SVG for Size and Rendering Speed

Discover the role of Scalable Vector Graphics (SVGs) in app development. Learn how to optimize SVGs with tools like SVGO.

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Optimize Your React Native App’s JavaScript Bundle

If Metro slows down your app, optimize your app's JavaScript bundle with alternative performant bundles, like Re.Pack, react-native-esbuild, or rnx-kit.

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Profiling React Native Apps With iOS and Android Tools

Improve mobile user experience with real-time data by profiling your React Native app with tools like Instruments on iOS and Android Profiler on Android.

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What's New in Reassure 1.0

Find out how to monitor React and React Native performance better than ever before with Reassure's new features.

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Superfast Nitro Modules with Marc Rousavy

Even faster React Native apps? That's possible with Nitro Modules! Tune in to the conversation with their creator, Marc Rousavy.

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React Native Performance in 2024: Challenges, Solutions, Forecasts

Join us as we explore the latest developments in React Native performance optimization with experts from Expo and Callstack.

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Profiling in Native and React Native

Get insights into profiling your React Native app from our experts in this podcast episode.

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React Native FastIO: Nitro-Powered Performance Boost

Listen to Mike Grabowski talk about React Native FastIO, a collection of primitives for working with data in React Native and its performance benefits.

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Creating Performant React Native Animations

Animations and performance: friends or foes? Tune in to learn how not to break your React Native app's user experience.

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React Native WebAssembly Release Walkthrough

Join us for a deep dive into Polygen: Callstack Incubator's breakthrough in React Native development!

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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.

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Automated Performance Regression Testing With Reassure

Developers often fix performance issues in React apps, but this is unsustainable and prone to regressions. Reassure, a testing library, helps spot problems before production, enhancing automated testing suites.

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Master JavaScript Performance in React Native (Part 1)

Watch Callstack's webinar on React Native JS performance. Learn to fix bottlenecks, leaks & FPS issues from the 2025 Ultimate Guide authors.

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Top 5 Metrics You Need to Track When Optimizing Your React Native App

Watch a webinar on optimizing React Native apps to learn the top 5 metrics every React Native team should track to improve performance, reduce load time, and boost user experience.

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Practical Approach to React Native Optimization for SMEs and Enterprises

Learn how Callstack improved a React Native app’s performance and user ratings through a real-world audit. Watch the webinar to see how it was done.

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Improving React Native App Performance: Practical Tactics and Real-Life Case Studies

Learn how to improve your React Native app's performance with practical tactics, metrics, and real-life case studies from Callstack experts.

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

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