Hisn Al Muslim, also known as Fortress of the Muslim, is a free Android application developed by Souf. This application is designed to help Muslims protect themselves from the evils of this world and the devil. It is a comprehensive collection of authentic Dua's (supplications) that a Muslim can recite on a daily basis or on special occasions. The book is very popular among Muslims, thanks to its easy memorization and the authenticity of most of the Hadiths contained in it.

The app's interface is user-friendly, and it comes with great features such as an easy-to-use search function that benefits from the auto-complete text field. The app also allows users to create their own favorite list by making a long press on a Hadith. Additionally, the app has a tablet layout and scrolling menu buttons. The developer has fixed a major bug and added a favorite list feature that allows users to add and remove Hadiths from their favorite list with a long press.

Overall, Hisn Al Muslim is an excellent application for Muslims who want to recite authentic Dua's on a daily basis or on special occasions. Feedback and issues can be sent to the developer at