GoKawiilExpo team releases Exact, a cross-platform app runtime for web, macOS, iOS and Linux
Expo's team has launched Exact, a runtime that lets developers write an interface once in a declarative language called Contract, paired with TypeScript or Rust logic, and deploy it natively to the web, macOS, iOS and Linux. On the web it compiles to a roughly 20KB JavaScript runtime driving the DOM, while on native platforms a Rust runner renders native UI elements like UIKit and AppKit controls. The project includes tooling (exact-templates, agent.mjs) that lets AI coding agents build, test and run apps across all supported platforms.