When you use the app, you can choose from the following categories of audio material:

Dedicated audio teaching materials with text information:

The voice-over of a language expert, such as Japanese teacher or non-native speaker, will be played. 

You can also play the same material by other voice-over actors. 

The app will automatically save the content file in the category you have selected. 

You can choose to have the app play the voice-over by default when the content file is saved. 

You can also change the playback speed, rewind, or fast-forward the specified number of seconds. 

You can also change the category of the content file.