السنة الرابعة إبتدائي is a free educational app developed by 3alim for Android users. The app is designed for Algerian students in the fourth grade, providing them with a comprehensive learning experience. It includes all the subjects taught in the fourth grade, including Mathematics, Arabic Language, Science and Technology Education, Islamic Education, French Language, and History and Geography.

The app comes with a variety of learning materials, including study guides, summaries, and educational files. It also includes exam topics and model answers for all subjects. The app is an excellent resource for students who want to improve their knowledge and understanding of the subjects taught in the fourth grade. The app is entirely free, making it accessible to all students who have an Android device.