Android applications are software programs designed to run on devices using the Android operating system, which is developed by Google. These applications can be downloaded from the Google Play Store or other app marketplaces, providing users with a wide range of functionalities, from games and social media to productivity tools and educational resources. Developers create Android applications using programming languages like Java or Kotlin. Once developed, these apps can be installed on smartphones, tablets, and other devices, allowing users to customize their experience and access various services. The versatility of Android applications contributes to the popularity of the Android platform worldwide.