> ## Documentation Index
> Fetch the complete documentation index at: https://helium-mintlify-create-navigation-structure-42614.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# SDK Quickstart

> Get started with Helium SDKs across all platforms

## Supported platforms

<CardGroup cols={2}>
  <Card icon="apple" href="/sdk-quickstarts/ios" title="iOS">
    Native iOS SDK for Swift and Objective-C
  </Card>

  <Card icon="android" href="/sdk-quickstarts/android" title="Android">
    Native Android SDK for Kotlin and Java
  </Card>

  <Card icon="react" href="/sdk-quickstarts/react-native" title="React Native">
    Cross-platform SDK for React Native apps
  </Card>

  <Card icon="flutter" href="/sdk-quickstarts/flutter" title="Flutter">
    Cross-platform SDK for Flutter apps
  </Card>
</CardGroup>

## Common features

All SDKs support:

* Paywall presentation
* Event tracking and analytics
* Fallback handling for offline scenarios
* StoreKit testing (iOS) and test environments (Android)
* Third-party analytics integrations

## Installation

Each platform has specific installation instructions. Select your platform above to view detailed setup steps.

## Next steps

After installing the SDK:

1. Configure your API keys
2. Present your first paywall
3. Set up event tracking
4. Test with sandbox environments