How does an Android application work?

An Android app is a software application that runs on the Android operating system, which is used on a variety of mobile devices, including smartphones and tablets. Android apps are written in Java or Kotlin programming languages and are designed to work on the Android platform using the Android Software Development Kit (SDK). The Android SDK includes tools for developing, testing, and deploying Android apps, as well as a set of libraries and frameworks that provide access to the device’s hardware and software features. Once an app is developed, it can be distributed through the Google Play Store, which is the official app store for Android devices. Users can download and install the app on their device and use it as designed by the developer.