សវភអងគលស ថនកទ៤ is an educational and reference application available on Android. Developed by LENGPANHA, this free app allows users to access and download textbooks and reference books for free.

The app is specifically designed for Cambodian students and teachers, providing them with easy access to Grade 4 textbooks in English. The textbooks cover various subjects and are aligned with the curriculum requirements. Users can easily navigate through the content and study using the new interactive features and multimedia resources.

LENGPANHA, the developer, is committed to continuously improving the app based on user feedback and suggestions. They aim to provide high-quality educational materials that meet the needs and goals of students and teachers across Cambodia.