--- title: Apple authentication with Firebase - Kotlin... description: A walkthrough of implementing Sign in with Apple using Firebase in a Kotlin Multiplatform (KMP) project targeting both Android and iOS. Covers setting up the... canonical: https://daily.dev/posts/apple-authentication-with-firebase---kotlin-multiplatform-cmp-android-ios-tutorial-itsmbkmka twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Apple authentication with Firebase - Kotlin Multiplatform (CMP) Android/iOS Tutorial | daily.dev og:description: A walkthrough of implementing Sign in with Apple using Firebase in a Kotlin Multiplatform (KMP) project targeting both Android and iOS. Covers setting up the... og:url: https://daily.dev/posts/apple-authentication-with-firebase---kotlin-multiplatform-cmp-android-ios-tutorial-itsmbkmka og:image: https://api.daily.dev/og/posts/ItSMBkmka.png og:image:alt: Apple authentication with Firebase - Kotlin Multiplatform (CMP) Android/iOS Tutorial 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. # Apple authentication with Firebase - Kotlin Multiplatform (CMP) Android/iOS Tutorial **[Stevdza-San](https://daily.dev/sources/stevdzasan)** · 8 min read · 0 upvotes · 0 comments ## Summary A walkthrough of implementing Sign in with Apple using Firebase in a Kotlin Multiplatform (KMP) project targeting both Android and iOS. Covers setting up the Apple provider in Firebase, enabling the Sign in with Apple capability in Xcode, creating App IDs, Service IDs, and keys in the Apple Developer portal, configuring the KMP-Auth library, and verifying the flow works end-to-end in a simulator. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Kotlin / Wasm — Auth part 2: Apple sign in](https://daily.dev/posts/kotlin-wasm-auth-part-2-apple-sign-in-zl0teqgtf) · ProAndroidDev · 0 upvotes · 0 comments - [Practical Kotlin Multiplatform: Implementing the Firebase Sign-up Operation with Ktor](https://daily.dev/posts/practical-kotlin-multiplatform-implementing-the-firebase-sign-up-operation-with-ktor-jddicwq8t) · Joe Birch · 0 upvotes · 0 comments - [Kotlin / Wasm — Auth part 1: Google Sign in](https://daily.dev/posts/kotlin-wasm-auth-part-1-google-sign-in-dp1b4k1zm) · ProAndroidDev · 0 upvotes · 0 comments --- Tags: [#authentication](https://daily.dev/tags/authentication), [#kotlin](https://daily.dev/tags/kotlin), [#firebase](https://daily.dev/tags/firebase) [View this post on daily.dev](https://daily.dev/posts/apple-authentication-with-firebase---kotlin-multiplatform-cmp-android-ios-tutorial-itsmbkmka) ```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":"Apple authentication with Firebase - Kotlin Multiplatform (CMP) Android/iOS Tutorial","url":"https://daily.dev/posts/apple-authentication-with-firebase---kotlin-multiplatform-cmp-android-ios-tutorial-itsmbkmka","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/apple-authentication-with-firebase---kotlin-multiplatform-cmp-android-ios-tutorial-itsmbkmka"},"datePublished":"2026-03-22T11:30:51.334Z","dateModified":"2026-03-22T11:32:24.442Z","description":"A walkthrough of implementing Sign in with Apple using Firebase in a Kotlin Multiplatform (KMP) project targeting both Android and iOS. 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