English Grammar Test is an educational app that helps users to improve their English grammar skills. Developed by NTStudio, this app is available on Android and completely free. The app offers more than 4000 grammar questions that cover beginner and advanced levels. It also includes grammar lessons with articles, tests, flashcards, and learning games.

One of the app's most significant features is that it works completely offline. This feature makes it convenient for users to practice their grammar skills anywhere, anytime, without an internet connection. The app has a simple and easy-to-use interface, making it suitable for all age groups. The questions are from both grammar topics and mixed topics, making it easy for users to practice and improve their overall grammar skills. The app also tracks the user's total score and analyzes their results, making it easy to monitor progress.

Overall, English Grammar Test is an excellent app for individuals preparing for TOEFL, GSET, IELTS, TOEIC, FCE, or CAE tests. Its vast collection of grammar questions, offline functionality, and simple user interface make it a must-have for anyone looking to improve their grammar skills. And the best part? It's completely free and regularly updated.