きくもん is an Android application developed by KUMON PUBLISHING CO.LTD. It falls under the category of Education & Reference and is available for free. The app allows users to listen to the audio of the purchased books. Users can select the desired book from the app's bookshelf on the home page. The initial setup requires the input of a "serial code" mentioned in the book.

The app provides a simple mechanism for easy access to audio content. Users can input the page number or select from the table of contents to start listening to the audio. This makes it convenient for users to engage in audio learning.

Additionally, the app features a "quiz" function that allows users to review the learning content. It is important to note that not all books are compatible with the quiz feature.