> For the complete documentation index, see [llms.txt](https://docs.tiun.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tiun.io/sdk/react-native-sdk/configuration.md).

# Configuration

## Mount the provider

Wrap your app in `<TiunProvider>` once. It holds the tiun session and renders the login and checkout overlays, so it must sit **above every component that uses the tiun hooks** — that's the only placement rule. The overlay sizes itself to the window, so it covers your UI correctly wherever in the tree the provider is mounted; the app root is simply the most convenient place for it.

```tsx
import { TiunProvider } from '@tiun/react-native-sdk';

export default function App() {
  return (
    <TiunProvider
      config={{
        snippetId: 'YOUR_SNIPPET_ID',
        returnUrl: 'myapp://tiun/return',
      }}
    >
      <RootNavigator />
    </TiunProvider>
  );
}
```

The provider is invisible until the user opens login or checkout; the rest of the time it takes up no space on screen.

***

## Configuration options

| Option       | Type                          | Default                 | Description                                                                                                                                                                                                                                                                                                                                                                                                                        |
| ------------ | ----------------------------- | ----------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `snippetId`  | `string`                      | —                       | **Required.** Your snippet ID from the dashboard.                                                                                                                                                                                                                                                                                                                                                                                  |
| `returnUrl`  | `string`                      | —                       | **Required.** The deep link the in-app browser returns to after payment, for example `myapp://tiun/return`. Its scheme must be registered natively — see [Installation](/sdk/react-native-sdk/installation.md#register-the-return-deep-link) — and must match the **App scheme** in the dashboard's **Settings → Environment setup** for the environment you target. If it doesn't, login and checkout close as soon as they open. |
| `host`       | `string`                      | `https://api.tiun.live` | Origin of the tiun environment to use, without a trailing slash. Set this to target sandbox.                                                                                                                                                                                                                                                                                                                                       |
| `language`   | `string`                      | `'en'`                  | Language for the overlay UI: `'en'`, `'de'`, or `'fr'`.                                                                                                                                                                                                                                                                                                                                                                            |
| `appearance` | `'light' \| 'dark' \| 'auto'` | `'light'`               | Color theme for the snippet. `'auto'` follows the OS setting. Changing it re-themes the open snippet live.                                                                                                                                                                                                                                                                                                                         |
| `debug`      | `boolean`                     | `false`                 | Log the native bridge traffic to the console, prefixed `[tiun]`.                                                                                                                                                                                                                                                                                                                                                                   |

Keep the config object stable — define it as a module-level constant rather than building it inline on every render:

```tsx
import type { TiunConfig } from '@tiun/react-native-sdk';

export const TIUN_CONFIG: TiunConfig = {
  snippetId: 'YOUR_SNIPPET_ID',
  returnUrl: 'myapp://tiun/return',
  language: 'en',
  appearance: 'light',
};
```

***

## Sandbox and live

tiun runs **live** and **sandbox** as two independent parallel environments, each with its own snippet ID, products, and product IDs. In React Native you select the environment with `host`:

| Environment | `host`                                            | Snippet and product IDs                 |
| ----------- | ------------------------------------------------- | --------------------------------------- |
| Live        | `https://api.tiun.live` *(default — omit `host`)* | Live snippet ID, `p-live-…` products    |
| Sandbox     | `https://api-sandbox.tiun.live`                   | Sandbox snippet ID, `p-test-…` products |

```tsx
// Development build — sandbox
export const TIUN_CONFIG: TiunConfig = {
  snippetId: 'YOUR_SANDBOX_SNIPPET_ID',
  host: 'https://api-sandbox.tiun.live',
  returnUrl: 'myapp://tiun/return',
  debug: true,
};
```

{% hint style="info" %}
**The React Native SDK has no `sandbox` flag.** Where the web SDK takes `sandbox: true`, the React Native SDK takes the environment's origin in `host`. Switch the snippet ID and the product IDs together with it — IDs never cross between environments.
{% endhint %}

For how the two environments relate, see [Sandbox](/reference/generic/sandbox.md) in Reference, and [setting up your environment](/guides/getting-started/set-up-environment.md) for the dashboard side.

***

Next: read the state and call tiun from your components with [Hooks and events](/sdk/react-native-sdk/hooks.md).


---

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