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

# Choose a Platform

The IDP SDK has two distinct integration surfaces.

## Expo and React Native

Use the provider and hook API:

* `SwigIdpProvider`
* `useSwigIdp()`
* `startOAuth()`
* `startEmailOtp()`
* `startSmsOtp()`

This path opens the isolated host in a system auth session and persists the
resulting Swig session in app storage.

Start with [Expo and React Native Apps](/idp-sdk/expo-and-react-native).

## Browser apps

Use the `/web` entry point:

* `createSwigWebClient()`
* `redirectToOAuth()`
* `completeOAuthFromUrl()`
* `getSession()`
* `logout()`

This path uses full-page redirects and persists the Swig session in browser
storage.

Start with [Browser Apps](/idp-sdk/web-apps).

## The practical difference

* mobile apps get OAuth plus email and SMS OTP convenience methods
* browser apps get the browser-safe redirect client and authority-management helpers
* both paths end with the same Swig session shape