Sổ Tay Tiếng Anh - Ngữ Pháp is an Android application developed by TuanEnglish. It is a comprehensive and convenient English learning companion that aims to provide maximum efficiency in studying, practicing, and applying English in various situations. Whether you are a student, a traveler, or a job seeker, this app can help you improve your English language skills and overcome language barriers.

The app offers a wide range of topics, including country and nationality, common slang sentences, vocabulary by subject, grammar, idioms, and more. It also includes 600 essential words for TOEIC, love messages, jokes, and the best sayings. With this app, you can learn English vocabulary through poetry, practice job interview skills, and even learn how to compliment or insult someone in English. Moreover, the app provides a useful feature of irregular verbs that helps you understand and use them correctly. The app is free to use and offers a user-friendly interface, making it an excellent choice for anyone who wants to learn English.