--- title: Dependency Injection with Koin, interfaces and qualifiers description: Koin qualifiers enable dependency injection frameworks to distinguish between multiple implementations of the same interface. The tutorial demonstrates how to... canonical: https://daily.dev/posts/dependency-injection-with-koin-interfaces-and-qualifiers-dyu0ehq4m twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Dependency Injection with Koin, interfaces and qualifiers | daily.dev og:description: Koin qualifiers enable dependency injection frameworks to distinguish between multiple implementations of the same interface. The tutorial demonstrates how to... og:url: https://daily.dev/posts/dependency-injection-with-koin-interfaces-and-qualifiers-dyu0ehq4m og:image: https://api.daily.dev/og/posts/dyU0ehq4m.png og:image:alt: Dependency Injection with Koin, interfaces and qualifiers og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Dependency Injection with Koin, interfaces and qualifiers **[ITNEXT](https://daily.dev/sources/itnext)** · 5 min read · 3 upvotes · 0 comments ## Summary Koin qualifiers enable dependency injection frameworks to distinguish between multiple implementations of the same interface. The tutorial demonstrates how to use qualifiers to provide platform-specific implementations (iOS vs Android) for engines and simulators, allowing the same Software class to work with different concrete dependencies. The article walks through refactoring a codebase to use interfaces, creating variant implementations, and configuring Koin modules with named qualifiers to resolve the correct dependencies based on platform context. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Dependency Injection with Koin: Scopes](https://daily.dev/posts/dependency-injection-with-koin-scopes-wv4mnp2gh) · ITNEXT · 0 upvotes · 0 comments - [Building & Deploying a simple KMP app — Part 4: Dependency injection](https://daily.dev/posts/building-deploying-a-simple-kmp-app-part-4-dependency-injection-bsi12alag) · ProAndroidDev · 0 upvotes · 0 comments --- Tags: [#android](https://daily.dev/tags/android), [#architecture](https://daily.dev/tags/architecture), [#kotlin](https://daily.dev/tags/kotlin), [#dependency-injection](https://daily.dev/tags/dependency-injection) [View this post on daily.dev](https://daily.dev/posts/dependency-injection-with-koin-interfaces-and-qualifiers-dyu0ehq4m) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Dependency Injection with Koin, interfaces and qualifiers","url":"https://daily.dev/posts/dependency-injection-with-koin-interfaces-and-qualifiers-dyu0ehq4m","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/dependency-injection-with-koin-interfaces-and-qualifiers-dyu0ehq4m"},"datePublished":"2026-01-20T13:04:26.497Z","dateModified":"2026-01-20T13:04:47.673Z","description":"Koin qualifiers enable dependency injection frameworks to distinguish between multiple implementations of the same interface. 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