English Grammar Rule Handbooks is an Android application developed by ESL Apps. This free app is designed to help users improve their grammar skills at their own pace and convenience. With this app, users can access a wealth of information on grammar rules, punctuation rules, spelling, vocabulary, commonly confused words, and more. The app also includes sections on the most commonly used verbs, irregular verbs, and phrasal verbs, as well as nouns, verbs, adjectives, and adverbs.

One of the most notable features of English Grammar Rule Handbooks is the grammar pretest, which allows users to test their grammar knowledge before diving into the content. The app is perfect for anyone looking to improve their English grammar skills, whether they are students, professionals, or non-native speakers. The app is easy to navigate, and the content is presented in a clear and concise manner, making it accessible to users of all levels.