# App

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

> For the index of this section of the site, see [llms.txt](https://fusionauth.io/docs/llms.txt)

[Android Java - AppAuth QuickStart integration of a Java-based Android app with FusionAuth.](https://fusionauth.io/docs/quickstarts/app/quickstart-java-android-native.md)

[Android Kotlin - Fusionauth SDK QuickStart integration of a Kotlin-based Android app with FusionAuth Android SDK.](https://fusionauth.io/docs/quickstarts/app/quickstart-kotlin-android-native.md)

[Flutter QuickStart integration of Flutter mobile application with FusionAuth.](https://fusionauth.io/docs/quickstarts/app/quickstart-flutter-native.md)

[iOS Swift - AppAuth QuickStart integration of a Swift and SwiftUI-based iOS app with FusionAuth.](https://fusionauth.io/docs/quickstarts/app/quickstart-swift-ios-native-appauth.md)

[iOS Swift - FusionAuth SDK QuickStart integration of a Swift-based iOS app with FusionAuth Swift SDK for iOS.](https://fusionauth.io/docs/quickstarts/app/quickstart-swift-ios-native.md)

[React Native QuickStart integration of React Native application with FusionAuth.](https://fusionauth.io/docs/quickstarts/app/quickstart-react-native.md)

Related

[SDKs Kotlin SDK for Android The FusionAuth Android SDK allows you to add different OAuth2 and OpenID Connect functionalities to your Android application. It's a highly standardized and simplified starting point for developers to easily integrate FusionAuth in their own custom Android mobile apps by taking care of all the dependencies. mobile authentication](https://fusionauth.io/docs/sdks/android-sdk.md)
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## Other pages in Quickstarts

> For the full index of this section, see [Quickstarts](https://fusionauth.io/docs/llms-quickstarts.txt).

- [API](https://fusionauth.io/docs/quickstarts/api.md): Explore step-by-step API QuickStart guides from FusionAuth to seamlessly integrate authentication into your application.
- [Single-page App](https://fusionauth.io/docs/quickstarts/spa.md): Explore step-by-step single-page application QuickStart guides from FusionAuth to seamlessly integrate authentication into your application.
- [Web](https://fusionauth.io/docs/quickstarts/web.md): Explore step-by-step web application QuickStart guides from FusionAuth to seamlessly integrate authentication into your application.