How can I make two activity like android in IOS(React Native)?

I want to make a app that will have two activity with different app launching icon in IOS(React Native).

I have made this in Android. The code is given bellow.

<activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
        android:windowSoftInputMode="adjustResize">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
      </activity>

      <activity
        android:name=".NotifierActivity"
        android:label="SOS"
        android:icon="@mipmap/ic_launcher_sos"
        android:roundIcon="@mipmap/ic_launcher_sos_round"
        android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
        android:windowSoftInputMode="adjustResize">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
      </activity>

I am beginner. So, I need your help badly.