pointfreeco/swift-composable-architecture

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14886 stars · 1673 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

The Composable Architecture (TCA) is a Swift library for building applications with a consistent, testable architecture based on state management, composition, and controlled side effects. It works with SwiftUI, UIKit, and all Apple platforms including iOS, macOS, iPadOS, visionOS, tvOS, and watchOS.

Use cases

• manage app state in SwiftUI with value types
• write unit and integration tests for app features
• break large features into composable modules
• handle side effects like API calls in a testable way
• share state across multiple screens
• structure an iOS app with unidirectional data flow

When to choose

• building SwiftUI or UIKit apps on Apple platforms
• you want highly testable business logic with strong guarantees
• you prefer unidirectional data flow and functional composition
• you need modular features that can be developed in isolation

When to avoid

• building for non-Apple platforms like Android or web
• your team prefers minimal architecture with no framework constraints
• you want a very lightweight solution for tiny apps
• you dislike boilerplate around reducers and actions

Facets

library · maturity stable

state-management testing ui-components mobile-development frontend developer-tools swiftui uikit unidirectional-data-flow redux-style apple-platforms composable-architecture tca swift ios macos mobile desktop

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