expo-application
@amazon-devices/expo-application retrieves native application information such as its ID, app name, and build version at runtime.
Installation
- Add the JavaScript library dependency in the package.jsonfile.dependencies: { ... "@amazon-devices/expo-application": "~2.0.0", ... }
- Reinstall dependencies using npm installcommand.
Examples
import * as Application from '@amazon-devices/expo-application';
import React, {useEffect, useState} from 'react';
import {StyleSheet, Text, View} from 'react-native';
export const App = () => {
  const [installationTime, setInstallationTime] = useState<Date>();
  const [updateTime, setUpdateTime] = useState<Date>();
  useEffect(() => {
    Application.getInstallationTimeAsync().then(setInstallationTime);
    Application.getLastUpdateTimeAsync().then(setUpdateTime);
  }, []);
  return (
    <View style={styles.container}>
      <Text style={styles.text}>
        applicationId: {Application.applicationId}
      </Text>
      <Text style={styles.text}>
        applicationName: {Application.applicationName}
      </Text>
      <Text style={styles.text}>
        nativeApplicationVersion: {Application.nativeApplicationVersion}
      </Text>
      <Text style={styles.text}>
        nativeBuildVersion: {Application.nativeBuildVersion}
      </Text>
      <Text style={styles.text}>
        getInstallationTimeAsync: {installationTime?.toLocaleString()}
      </Text>
      <Text style={styles.text}>
        getLastUpdateTimeAsync: {updateTime?.toLocaleString()}
      </Text>
    </View>
  );
};
const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: 'white',
  },
  text: {
    fontSize: 32,
    color: 'black',
  },
});
API reference
Check out the dedicated documentation page for info about this library, API reference and more: Official Expo documentation for expo-application.
Constants
| Constant | Description | 
|---|---|
| applicationId | The ID of the application | 
| applicationName | The human-readable name of the application that is displayed with the app's icon on the device's home screen or desktop | 
| nativeApplicationVersion | The human-readable version of the native application that may be displayed in the app store | 
| nativeBuildVersion | The internal build version of the native application that the app store may use to distinguish between different binaries | 
Methods
| Method | Description | 
|---|---|
| getInstallationTimeAsync | Gets the time the app was installed onto the device, not counting subsequent updates | 
| getLastUpdateTimeAsync | Gets the last time the app was updated | 
Supported versions
| Package Version | Based On | @amazon-devices/react-native-kepler version | 
|---|---|---|
| 2.0.x | 5.6.0 | 2.0.x | 
Additional resources
For information on additional libraries, see Supported Third-Party Libraries and Services.
Last updated: Sep 30, 2025

