TCA

Lesson in the iOS Roadmap · Stage 15: Reactive Programming

Last updated 14 September 2026

What is TCA?

The Composable Architecture (TCA) is an opinionated architecture library for Swift developed by Point-Free. It organizes app logic around unidirectional data flow with state, actions, reducers, and effects. TCA emphasizes testability and composability, allowing large app features to be built from smaller, independently testable pieces.

Study this in the interactive course See the whole iOS roadmap

Free resources to learn TCA

Open sourceThe Composable architecture
ArticleThe Composable Architecture: Swift guide to TCA
VideoShai Mishali - A Newbie's Guide to The Composable Architecture

TCA: common questions

Can I learn TCA in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain TCA in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this TCA tutorial for beginners?

It is lesson 92 of 170 in the free iOS roadmap, in stage 15, Reactive Programming. If you are new to iOS, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.