# Exact offers shared app interfaces and agent tests across platforms

_Published Monday, November 9, 2026 at 7:19 PM EST · Products · Latest · Tier 2 — Notable_

![Contribute to expo/exact development by creating an account on GitHub. — Primary](https://opengraph.githubassets.com/3f08bcded302ab019d388818cd4fc7b88b6315a3086c976ddfb4020a981d0ef2/expo/exact)

Exact's public repository offers a cross-platform application runtime that compiles one interface definition for the web, macOS, iOS and Linux. Its documentation reports that an example todo app was built and passed the same test on the web, macOS and the iOS Simulator.

Developers describe interfaces in a language called Contract and write data logic in TypeScript or Rust. A shared driver lets coding agents inspect screens, operate controls and run tests across hosts. Exact is pre-1.0 and changes daily, with no API stability, backward compatibility or migration guide.

## Sources

- [GitHub](https://github.com/expo/exact)

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Canonical: https://techandbusiness.org/newswire/eolmPj7gz8E6p4WFKmo8JP
Published: 2026-11-10T00:19:03.834Z
Story chronology: 2026-11-09T22:59:13.000Z
Retrieved: 2026-11-10T03:08:12.693Z
Publisher: Tech & Business (techandbusiness.org)