> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rownd.io/llms.txt
> Use this file to discover all available pages before exploring further.
# Expo
> Rownd bindings for Expo
### Prerequisites
You must be using React Native v0.64 or higher.
Must be an ejected Expo app which can be bare React Native or use an Expo development build. Instructions for bare React Native app can be found [here](/sdk-reference/mobile/react-native).
### Installation
First, install the Rownd SDK for Expo.
```bash theme={null}
npm install @rownd/react-native
```
### Expo development
1. Add `@rownd/react-native` as a plugin to your `app.json` file.
```json theme={null}
{
"expo": {
"plugins": ["@rownd/react-native"]
}
}
```
2. Install [Expo BuildProperties](https://docs.expo.dev/versions/latest/sdk/build-properties/) to set iOS/Android versions
```sh theme={null}
npx expo install expo-build-properties
```
3. Add `expo-build-properties` as a plugin to your `app.json` file. Ensure the Sdk versions match or are above provided iOS/Android versions.
```json theme={null}
{
"expo": {
"plugins": [
"@rownd/react-native",
[
"expo-build-properties",
{
"android": {
"minSdkVersion": 26
},
"ios": {
"deploymentTarget": "14.0"
}
}
]
]
}
}
```
4. (optional) Enable Apple sign-in for iOS in your `app.json` file.
```json theme={null}
{
"expo": {
"ios": {
"usesAppleSignIn": true
}
}
}
```
5. (optional) Enable Google sign-in for iOS. Add your Google IOS Client ID client as a URL Scheme in your `app.json` file.
```json theme={null}
{
"expo": {
"infoPlist": {
"CFBundleURLTypes": [
{
"CFBundleURLSchemes": [
"com.googleusercontent.apps.xxxxxxxxxx-xxxxxxxxxxxxxxxxxxxxxx"
]
}
]
}
}
}
```
#### Enable deep linking
Rownd supports automatically signing-in users when they initially install your
app or when they click a sign-in link when the app is already installed. Follow instructions below to setup.
1. Visit the Rownd platform and go to the [Sign-in methods](https://app.rownd.io) page. Open the Mobile app settings modal and (1) create a subdomain and (2) fill out the iOS/Android settings.
2. Enable deep linking for Expo using `app.json` and `` created in the Rownd platform.
These settings might only apply at the time the native projects were generated. Try deleting the ios/android folders and rebuilding the project.
File: `app.json`
```json theme={null}
{
"expo": {
"ios": {
...
"associatedDomains": ["applinks:.rownd.link"]
},
"android": {
...
"intentFilters": [
{
"action": "VIEW",
"autoVerify": true,
"data": [
{
"scheme": "https",
"host": ".rownd.link"
}
],
"category": ["BROWSABLE", "DEFAULT"]
}
]
}
}
}
```