Layered mobile application user interfaces

Disclosed are systems, methods, and devices for providing a layered user interface for one or more applications. A user-interface layer for a voice user interface is generated. The user-interface layer can be based on a markup-language-structured user-interface description for an application configured to execute on a computing device. The user-interface layer can include a command display of one or more voice-accessible commands for the application. The computing device can display at least the user-interface layer of the voice user interface. The computing device can receive an input utterance, obtain input text based upon speech recognition performed upon the input utterance, and determine that the input text corresponds to a voice-accessible command displayed as part of the command display. The computing device can execute the application to perform the command.