English Grammar is a very helpful and easy to use app for those who want to improve their English grammar and language skills. This application is useful to learn and improve grammar, especially the basics. 

The app has different topics that include: nouns, verbs, adjectives, adverbs, sentences, paragraphs, punctuation, and spelling. It also includes an interactive component that helps you to improve your grammar and language skills.

This application is useful for all levels of users, from beginners to advanced.

How to use the application:

1. Download the application and install it on your device.

2. After installation, you will be able to see the application in the list of applications on your device.

3. Select the "Start" button to start the interactive mode.

4. Now, it is time to choose the level of difficulty. Choose the level you want to start with.

5. Now, the application will start to show you the content. You can choose to view the content in the text mode or the audio mode. You can switch between the different modes.

6. Now, it is time to make a test. There are different types of tests that you can make.