A free program for Android, by English Teacher Oxford.

Aviation English Vocabulary 4 – 5 is a learning tool that helps you improve your English vocabulary. The app is suitable for any level, from beginner to intermediate and advanced.

The aim of this vocabulary learning tool is to allow you to improve your vocabulary while having fun at the same time. To achieve this, we have developed a series of interactive quizzes and lessons that allow you to learn at your own pace. The app is designed to be used in a self-learning mode. That means that you can use it without the need for an external instructor. The app will guide you through each lesson, and you will have the opportunity to review what you have learned at the end of each session.

We have developed a vocabulary learning system that works as follows:

You start by learning the basic vocabulary, which includes the most common words. As you learn new words, the app will allow you to choose the most appropriate image to help you remember the words. You will be guided through each lesson, and at the end of each session, you will be given a test to evaluate your progress.