The Learn English Grammar (Offline) app by Smart Training is a free Android app designed to help users learn and practice English grammar. It offers over 200 lessons on aspects of English grammar with clear and understandable explanations and many examples. The app also includes over 5000 grammar questions, over 6000 vocabulary questions, 600 essential words, and irregular verbs.

One of the best features of the app is that it can be used offline, making it convenient for users who want to learn and practice English anytime, anywhere. The app also includes spoken English lessons, which can help users improve their speaking skills.

Overall, the Learn English Grammar (Offline) app is a useful tool for anyone who wants to improve their English grammar skills. The app is easy to use, and the lessons and quizzes are well-organized and comprehensive. The app is free, so it's definitely worth checking out if you're looking for a way to improve your English grammar skills. However, the app does ask users to rate it with 5 stars, which can be seen as a drawback for some users.