spotify/mobius

Health v2 · maintenance only

Adoption not part of the score

1263 stars · 105 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Mobius is a functional reactive framework from Spotify for managing state evolution and side-effects, based on a unidirectional data flow loop. It ships as a pure Java core with add-ons for Android UIs, RxJava 1-3, and Kotlin Coroutines.

Use cases

• manage app state with unidirectional data flow on Android
• separate side-effects from state updates in a mobile app
• make UI state logic unit-testable
• connect RxJava or coroutines to a state loop
• structure an Android app with MVI-style architecture

When to choose

• you build Android apps in Java or Kotlin and want a production-proven state framework
• you need strict separation of state transitions from side-effects for testability
• you already use RxJava or Kotlin Coroutines and want integration modules

When to avoid

• you need a cross-platform or iOS state framework
• you prefer Compose-first state management or a lighter unidirectional-flow library
• your project targets non-JVM platforms

Facets

framework · maturity stable

state-management web-framework mobile-development android-tools developer-tools jvm functional-reactive-programming unidirectional-data-flow mvvi rxjava kotlin-coroutines testability android

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markdown · JSON · MCP: product_card(name="spotify/mobius")