English Grammar Offline Lucent Book is an Android application developed by Offline Books. This application falls under the Education & Reference category and is available for free in the Google Play Store. The app covers a wide range of topics related to English grammar and provides an offline mode feature, making it possible for users to access the content without an internet connection.

The app offers detailed explanations and examples for various topics, including Kinds of Sentences, Subject and Predicate, The Verb, Modals, Non-Finite Verbs, Determiners, Articles: Determiners, Conjunctions and Sentence Connectors, Time and Tense, Voice, Sequence of Tenses, Direct and Indirect Speech/Narration, Simple, Compound and Complex Sentence, Conditional Sentences, Phrasal Verbs and Prepositional Phrases, Subject-Verb Agreement, Prepositions, Question Tags, Interchange of Affirmative and Negative Sentences, Interchange of Interrogative and Assertive Sentences, Interchange of Exclamatory and Assertive Sentences, Removal of Too, Degrees of Comparison, Cohesive Devices / Markers, Punctuation and Capital Letters, Word Power Made Easy, and Spelling Test. The app is user-friendly, and the content is well-organized, providing an excellent resource for individuals looking to improve their English grammar skills.