"Hisnul Muslim Urdu Book" is an Android application developed by Sadaf Enterprises under the Education & Reference category. It is a translated version of the prayer book written by Shaikh Saeed bin Ali al Qahtani and translated into Urdu by Hafiz Salah-ud-Din Yousuf.

The app is designed to provide its users with easy access to various Islamic prayers and supplications in Urdu. The interface is user-friendly and easy to navigate, allowing users to quickly find the prayer they need. The app also includes an audio recitation of all the prayers, making it easier for users to learn and recite them correctly. Overall, "Hisnul Muslim Urdu Book" is a useful app for those who want to deepen their spiritual practice and learn more about Islamic prayers and supplications.