Learning by Listening is a free offline application that will help you improve your English listening skills and boost your memory. With over 500 topics, this app provides you with a comprehensive and effective learning experience.

The main focus of this application is to provide a simple, easy-to-use interface for learning. You can run the tests on your mobile device. Each topic has its own vocabulary list with the meaning and the example. You can choose to read the description and listen to the example. This app is an offline application. 

So, you will not need to be connected to the Internet to use it. It can also be used in any place or environment.