A free program for Android, by ZGdevelopment.

Learn German with Dialogs is an application that is aimed at learning German as a new language. The application contains a lot of dialogs that have different topics and themes. 

The user can change the speed of the audio while listening to the dialog. This is a free application, and there are no costs associated with it. 

The user can choose the topics from which they want to learn. At the end of each topic, they will get a set of questions that will help them to verify their understanding. The user can choose to repeat the questions that they have answered incorrectly. This will help them to improve their score.