LearnEnglish Grammar UK ed. is a comprehensive and free grammar practice app designed to help learners improve their English grammar accuracy. The app offers more than 1000 practice questions to reinforce grammar skills and consists of four levels, ranging from Beginner (CEFR level A1) to Advanced (CEFR level C2). The app is suitable for learners of all levels, and as learners' grammar accuracy improves, they can progress to the next level.

The app contains over 600 grammar activities at each level, covering approximately 25 grammar topics such as Simple Past, Past Continuous, Question Tags, Prepositions, Conditionals, and Future Perfect. The grammar questions are presented in 10 unique activity types, including fill-in-the-blanks, multiple choice, and matching. There are two sections, Practice, and Test, which help learners to work through practice questions and challenge their knowledge of grammar topics at their level. The app is available in English, Japanese, Spanish, and traditional and simplified Chinese. In addition, help files are available in Arabic, Italian, Chinese, English, Japanese, and Spanish.