Live Activities in React Native, Expo Widgets, and Why Brownies Are Best Shared With Friends The New Marvel Superhero So it’s been quite the fortnight. The race to Live Activities and Widgets in …

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Callstack released Voltra, enabling React Native developers to build iOS widgets and Live Activities using React Native-style components instead of Swift. Expo followed with its own widgets library in SDK 55 Beta, built on SwiftUI. Voltra offers better documentation and server-side update support, while Expo's solution integrates directly with SwiftUI. Callstack also introduced Brownie, a state-sharing library for brownfield apps that uses JSI to synchronize state between native iOS and JavaScript layers, simplifying React Native integration into existing native apps.