--- title: "What's New in Reassure 1.0" description: "Find out how to monitor React and React Native performance better than ever before with Reassure's new features." url: https://www.callstack.com/podcasts/whats-new-in-reassure-1-0 updated: 2026-10-24T08:39:44.229Z --- # 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. _Guests: Maciej Jastrzębski, Software Engineer @ Callstack; Adam Horodyski, Software Engineer @ Callstack · Host: Jakub Urban, Software Engineer @ Callstack · Published 2024-07-17 · Duration 53:15 · Category: Performance_ Listen: [YouTube](https://youtu.be/teidsa0zv8o) · [Spotify](https://open.spotify.com/episode/0XPbcA1rWSCMRgGywOO8bn?si=mhWVGZMUTmeHDyY4DUKomA) · [Apple Podcasts](https://podcasts.apple.com/us/podcast/whats-new-in-reassure-1-0-the-react-native-show/id1525543072?i=1000662515798) · [SoundCloud](https://soundcloud.com/user-985069846/whats-new-in-reassure-10-the-react-native-show-podcast-coffee-talk-20/s-HVJ89lVCC9Y?si=b064d9b686f44658955a26db8f4ade91&utm_source=clipboard&utm_medium=text&utm_campaign=social_sharing) In June, we released stable Reassure v1.0.0. It’s big news for performance-oriented teams, so we just couldn’t help ourselves but record an entire Coffee Talk about that! To give you the most comprehensive insight into what’s new in the performance testing companion for React and React Native, Kuba invited the team behind it: Maciej Jastrzębski and Adam Horodyski. Together, they dive into what Reassure is, its uses, how to integrate it, and how it can benefit projects from both a development and business perspective. The episode also touches on the technical details of the tool, the importance of performance testing, and calls for your help. Yes, you read it right, we welcome community contributions to further enhance Reassure! ## Here's what we explain about the recent Reassure version - Reassure use cases and benefits - Technical details and performance monitoring - Reassure 1.0 release and new features - When to introduce Reassure - Challenges and best practices - Reassure's business value - Community contributions and future enhancements ## Resources for further reference - [Reassure 1.0 change log](https://github.com/callstack/reassure/releases/tag/reassure%401.0.0) - Help wanted issues: [PNPM support](https://github.com/callstack/reassure/issues/277), [Bun support](https://github.com/callstack/reassure/issues/452), [Direct GH action support](https://github.com/callstack/reassure/issues/58) Insights ## Learn more about Performance Here's everything we published recently on this topic. [View all](https://www.callstack.com/insights) - [Why Nitro Is More Than a Faster Bridge](https://www.callstack.com/podcasts/why-nitro-is-more-than-a-faster-bridge) (Jul 3 · Podcast): Marc Rousavy (Margelo) talks Nitro modules, native state, zero-copy data, Vision Camera, and why speed is only part of the story. - [Profile React Components in React Native Release Builds](https://www.callstack.com/blog/profile-react-components-in-react-native-release-builds) (May 25 · Article): Learn how to profile React components in React Native release builds with @callstack/inspector, using an Expo app setup that requires zero native code changes. - [Memory Ownership Models: When JavaScript Meets Native Code](https://www.callstack.com/blog/memory-ownership-models-when-javascript-meets-native-code) (Nov 21 · Article): 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. - [From Files to Buffers: Building Real-Time Audio Pipelines in React Native](https://www.callstack.com/blog/from-files-to-buffers-building-real-time-audio-pipelines-in-react-native) (Oct 14 · Article): Learn how to move beyond file-based audio APIs and work directly with in-memory PCM data in React Native. This guide shows how to construct WAV buffers, use JSI for zero-copy transfers, and enable real-time audio processing. - [How to Add Custom JSI Bindings in Your TurboModule (and Why You Might Need Them)](https://www.callstack.com/blog/how-to-add-custom-jsi-bindings-in-your-turbomodule-and-why-you-might-need-them) (Sep 8 · Article): TurboModules provide a type-safe way to write native code in React Native. JSI sits underneath as a lower-level API, enabling direct interaction with the JavaScript runtime. Beyond what TurboModules expose, JSI gives you access to powerful features, such as working directly with ArrayBuffers. This article shows how to inject a custom binding step by step. - [Exploring Fibers: Cooperative Multitasking and Lock-Free Task Execution](https://www.callstack.com/blog/exploring-fibers-cooperative-multitasking-and-lock-free-task-execution) (Jul 24 · Article): Explore how fibers enable lightweight, cooperative multitasking. This guide walks through building a simple scheduler, managing task dependencies without locks, and using Tracy to visualize performance. - [Multithreading Isn’t Free: Performance Pitfalls Visualized](https://www.callstack.com/blog/multithreading-isnt-free-performance-pitfalls-visualized) (May 21 · Article): 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. - [Master JavaScript Performance in React Native (Part 2)](https://www.callstack.com/events/master-javascript-performance-in-react-native-part-2) (Apr 28 · Webinar): Learn to fix JS performance issues in React Native-from debounce bugs to Redux selectors, in this hands-on webinar with real code examples. - [Tips & Tricks From The Ultimate Guide to React Native Optimization 2025](https://www.callstack.com/events/tips-tricks-from-the-ultimate-guide-to-react-native-optimization-2025) (Apr 24 · Talk): View flattening, React 19 hooks, real DevTools tips-learn what actually helps your React Native app run faster.