"كتاب العلوم الرابع ابتدائي" is an Android application that provides simplified online study materials. Developed by ar2dev, this free educational and reference app is a file-sharing system that enables access to a variety of study materials for fourth-grade students. The app includes a wide range of subjects such as social studies, mathematics, Islamic studies, English, computer, science, and grammar. It also offers textbooks, ministry books, solutions, summaries, class notes, and much more. The app has been designed to help students improve their academic progress.

The app offers various features such as solutions for the new fourth-grade ministry books for previous years in the latest version. It also includes summaries, definitions, exercises with solutions, and a unique display of solutions in a beautiful and distinctive way. Furthermore, the app provides access to lessons from renowned Iraqi teachers on various topics and chapters of the book. The app also contains a collection of ministry books and answers from baccalaureate exams for different terms. It has more than 150 pages of fourth-grade science material, including reviews for exams and ministry books. The app is continually updated to provide students with the latest and most useful information.