English Teacher is a free Android app developed by HelloWorld Developers in the category of Education & Reference. The app is designed to help users improve their English vocabulary and grammar skills. With English Teacher, you can access practice questions for free and learn how to prepare for the TOEFL test.

The app is user-friendly and easy to navigate, making it a great tool for both beginners and advanced learners. The app offers various levels of difficulty, so you can choose the one that suits your needs. Additionally, the app provides instant feedback on your progress, allowing you to track your performance and identify areas that need improvement.

Overall, English Teacher is an excellent app for anyone who wants to improve their English language skills. It's free to use and offers a wide range of features that are useful for both students and professionals alike.