mobile-app/android/app/src/main/res/drawable-v21/launch_background.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- Gradient background from #c4d9d4 (top) to #f0f5fc (bottom) -->
    <item android:drawable="@drawable/splash_gradient" />

    <!-- House illustration centered -->
    <item>
        <bitmap
            android:gravity="center"
            android:src="@drawable/splash_house" />
    </item>
</layer-list>