> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rampkit.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Initialize

> Initialize the RampKit iOS SDK

## Initialize

Import the SDK and initialize it early in app launch (e.g., in `application(_:didFinishLaunchingWithOptions:)`).

```swift theme={null}
import RampKit

@main
class AppDelegate: UIResponder, UIApplicationDelegate {
  func application(_ application: UIApplication,
                   didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    RampKit.initSdk(
      apiKey: "YOUR_API_KEY",
      environment: .production,
      autoShowOnboarding: false,
      onOnboardingFinished: { payload in
        // handle completion
      }
    )
    return true
  }
}
```

SwiftUI App example:

```swift theme={null}
import SwiftUI
import RampKit

@main
struct MyApp: App {
  init() {
    RampKit.initSdk(
      apiKey: "YOUR_API_KEY",
      environment: .staging,
      autoShowOnboarding: false,
      onOnboardingFinished: { payload in
        print("Flow finished: \(payload)")
      }
    )
  }

  var body: some Scene {
    WindowGroup {
      ContentView()
    }
  }
}
```

Recommended options:

* `environment`: `.production` or `.staging`
* `autoShowOnboarding`: present automatically if a flow is available after init
* `onOnboardingFinished`: receive completion payloads for analytics