Berlatih Kosakata Arab is an Android mobile application developed by Harmoni Squad. The app is designed to support the learning of Arabic vocabulary, particularly for students of tholib 'Arabic Masjid Schooling'. The source of vocabulary in this app is from the book 'Baina Yadaik', and the materials are derived directly from Arabic Masjid Schooling teachers or other media sources that are provided.

The app provides a range of features such as vocabulary quizzes, flashcards, and a dictionary. Users can test their knowledge of vocabulary by taking quizzes and track their progress. The app also includes a feature to guess the vocabulary words based on clues, which helps users to memorize the words more effectively. It is worth mentioning that the inputted words in the guessing game must match the vocabulary dictionary provided in the app.

Berlatih Kosakata Arab is a free app and is suitable for anyone who wants to learn Arabic vocabulary. It is a useful tool for both beginners and intermediate learners. Overall, this app is a great resource for those who are seeking to improve their Arabic vocabulary skills.