Hilt vs Koin

Hilt vs Koin

Hilt Versus Koin: A Comparison

The deepest difference is when the graph is checked. Remove the DataModule from BookNest, so that nothing tells Hilt which class implements BookRepository, and the build itself fails:

Output of 141

.../BookNestApp_HiltComponents.java:139: error: [Dagger/MissingBinding]
com.example.booknest.data.BookRepository cannot be provided without an @Provides-annotated
method.
  ...
      com.example.booknest.data.BookRepository is injected at
          [...ActivityC] com.example.booknest.MainActivity.repo
  It is also requested at:
      com.example.booknest.ui.CatalogViewModel(repo)
...
> Task :app:hiltJavaCompileDebug FAILED in 6m 22s

Koin's equivalent mistake, asking for a type no module declares, compiled and ran, then threw NoDefinitionFoundException at the call site (Koin). Everything else follows from that choice:

Hilt and Koin compared (both Apache 2.0; 17.7k and 10.0k GitHub 29 stars)
	Hilt 2.60.1	Koin 4.2.2
How it works	KSP generates factories at build time	Kotlin DSL resolved at run time
Missing binding	Build error naming the chain	Exception when first requested
Platforms	Android (Dagger itself on any JVM)	Kotlin Multiplatform 25,990
Android integration	Jetpack 234 : ViewModel, Navigation, WorkManager 234	Android, Compose 234 , Navigation 3 modules

Choose Hilt for a large Android-only app, where build-time checks catch wiring mistakes before users do and Jetpack integrations (hilt-work, CoroutineWorker) save code. Choose Koin for Kotlin Multiplatform (Kotlin Multiplatform), faster builds, or a small app.

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