Johnny Grammar Word Challenge is a free Android app designed by British Council. It is an educational and entertaining quiz game that tests your knowledge of English vocabulary, grammar, and spelling. The game consists of multiple-choice questions, and you have to answer as many questions as possible in 60 seconds.

The app offers three difficulty levels (Easy, Medium, and Hard) and three categories (Words, Grammar, and Spelling). It includes ten topics such as Food & Restaurants, Travel, Idioms, and Hobbies. The app also offers badges that you can earn as you progress and share your score with others on the leaderboard.

The game provides feedback for the wrong answers, so you can learn from your mistakes. You can compete with other players on a global leaderboard and track your progress. You can also find more exciting language activities on the British Council website.

However, the app tracks your usage and may occasionally send you messages about services from your local British Council center. It may also detect your location based on your GPS position, which can decrease battery life.

Overall, Johnny Grammar Word Challenge is a great app for English learners of all ages who want to improve their vocabulary, grammar, and spelling skills in a fun and engaging way.