The xylophone is a musical instrument in the percussion family that consists of wooden bars struck by mallets. Like the glockenspiel, the xylophone essentially consists of a set of tuned keys arranged in the fashion of the keyboard of a piano. This is a basic android + iOS mobile app coded in Dart(Flutter) You will need a Flutter SDK for running this app in Android Studio

Flutter is an open-source UI software development kit created by Google. It is used to develop applications for Android, iOS, Windows, Mac, Linux, Google Fuchsia and the web from a single codebase. The first version of Flutter was known as codename "Sky" and ran on the Android operating system.

With this we can code for both OS (Android +iOS) with a same language which is Dart