Hisnul Muslim (حصن المسلم) is a book of prayers and dhikr in Islam which is very popular among Muslims. This book is also known as "Fortress of the Muslims" in English. Hisnul Muslim contains various prayers and dhikr that can be used by Muslims in various daily situations, such as prayers before eating, prayers before sleeping, prayers when traveling, prayers for safety, and many other prayers.

This book is often used by Muslims as a guide in living their daily lives and to strengthen their spiritual bond with Allah. Hisnul Muslim contains prayers taken from the Koran and the hadith of the Prophet Muhammad SAW, and is often used as a reference for remembering important prayers and dhikr in everyday life.

The book Hisnul Muslim is summarized from various hadiths (sayings and actions of the Prophet Muhammad SAW) which contain prayers and dhikr which are recommended to be read in various situations. The aim is to help Muslims communicate with Allah SWT, ask for help, protection and various other goodness in everyday life.

This book is available in various languages ​​and versions, making it accessible to Muslims throughout the world. Hisnul Muslim is very popular because it provides practical guidance in living daily life according to Islamic teachings.

Features of this application:
- can be read offline and does not require an internet connection
- small, medium and large text size options
- sharing feature, making it easier to share prayer readings via WhatsApp or other applications.