Ngữ Pháp Tiếng Anh Cơ Bản is an Android application developed by app.feee. It is a comprehensive app that provides grammar lessons for learners of the English language. The app covers various levels of grammar, including basic grammar lessons, practical English grammar lessons, and lessons on correct English pronunciation.

One of the app's notable features is its well-crafted grammar lessons that are designed to help learners improve their grammar skills. The practical English grammar lessons are especially helpful for those who want to use English in real-life situations. Additionally, the app's lessons on English pronunciation can help learners speak English with accuracy and clarity.

Overall, Ngữ Pháp Tiếng Anh Cơ Bản is a helpful app for anyone who wants to learn English grammar. It is free to use and is compatible with Android 9.0.