English Grammar :: Common Mistakes is an Android app developed by SoftValley, available for free in the Education & Reference category. The app is designed to help users learn and avoid common mistakes in English grammar, particularly related to prepositions, articles, tenses, and parts of speech. The app covers various topics like wrong preposition, infinitive, wrong tense, un-English expressions, omission of preposition, unnecessary prepositions, unnecessary articles, use of the infinitive, position of adverbs, prepositions, verbs, adverbs, adjectives, nouns, number, and parts of speech.

The app is a great tool for English language learners who want to improve their communication skills. It provides a comprehensive list of common mistakes and explains how to avoid them. The app is easy to use and the interface is user-friendly. With this app, users can learn and improve on their mistakes, which will help them to enhance their English proficiency. Overall, English Grammar :: Common Mistakes is a useful app for anyone who wants to improve their English grammar and communication skills.