You can build an open-source ArkUI-X framework to build a cross-platform app. See how an app for Android and HarmonyOS NEXT is built at the same time If you have a Mac, you can build an app for three platforms (Android, iOS, and HarmonyOS NEXT/OpenHarmony-Oniro). A developer here used qwen AI to write a basic application.
@Sajjad Mayahi demonstration above here


