The "مكتبة كتب الشيخ صالح الفوزان" app, developed by So Smart Apps, is a free educational and reference app available on Android. It provides a comprehensive collection of books written by Sheikh Saleh Al-Fawzan, a prominent Islamic scholar.

The app features a wide range of books covering various topics such as Islamic jurisprudence, Islamic beliefs, and Islamic history. Users can easily navigate through the app's user-friendly interface and search for books based on their titles or authors. The app also allows users to bookmark their favorite pages for quick access and provides an option to change the font size for comfortable reading.

Overall, "مكتبة كتب الشيخ صالح الفوزان" is an excellent resource for anyone interested in learning more about Islamic studies and the works of Sheikh Saleh Al-Fawzan. With its vast collection of books and easy-to-use interface, this app is definitely worth checking out.