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Shopify·Nov 5, 2026·rolling·open source

Reflex

Reflex is an MVVM-based mobile app architecture designed to enable AI agents to build, test, and drive mobile applications headlessly. By decoupling business logic from the UI and exposing state and actions through a standardized JSON contract, it allows for rapid feedback loops and cross-platform synchronization without requiring emulators.

Mobile DevelopmentAI AgentsArchitectureTesting
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overview

Reflex is an MVVM-based mobile app architecture designed to enable AI agents to build, test, and drive mobile applications headlessly. By decoupling business logic from the UI and exposing state and actions through a standardized JSON contract, it allows for rapid feedback loops and cross-platform synchronization without requiring emulators.

key features
  • 01Headless execution of business logic for rapid feedback loops
  • 02Strict ViewModel contract using an Elm-style state/action pattern
  • 03Platform-agnostic CLI for inspecting state and driving app interactions
  • 04Shared test suite for maintaining parity between iOS and Android
  • 05Introspection Kit for exposing app state and actions as JSON
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