> For the complete documentation index, see [llms.txt](https://fusionauth.io/docs/llms.txt)

# App

Explore step-by-step application QuickStart guides from FusionAuth to seamlessly integrate authentication into your application.

[Android (Java) with AppAuth Android (Java) with AppAuth](https://fusionauth.io/docs/get-started/quickstarts/app/quickstart-java-android-native.md)

[Android (Kotlin) with FusionAuth SDK Android (Kotlin) with FusionAuth SDK](https://fusionauth.io/docs/get-started/quickstarts/app/quickstart-kotlin-android-native.md)

[Flutter Flutter](https://fusionauth.io/docs/get-started/quickstarts/app/quickstart-flutter-native.md)

[iOS (Swift) with AppAuth iOS (Swift) with AppAuth](https://fusionauth.io/docs/get-started/quickstarts/app/quickstart-swift-ios-native-appauth.md)

[iOS (Swift) with FusionAuth SDK iOS (Swift) with FusionAuth SDK](https://fusionauth.io/docs/get-started/quickstarts/app/quickstart-swift-ios-native.md)

[React Native React Native](https://fusionauth.io/docs/get-started/quickstarts/app/quickstart-react-native.md)