The Alexa app is a mobile application developed by Amazon that allows users to interact with the Alexa voice assistant. It enables users to control smart home devices, play music, set reminders, and access various skills and services through voice commands or text input. The app is available for both iOS and Android devices. In addition to controlling devices, the Alexa app provides a user-friendly interface for managing settings and preferences. Users can customize their experience by linking accounts, creating routines, and accessing news updates. Overall, the app enhances the functionality of the Alexa ecosystem.