بستان العارفين is a free Android application developed by Rif3i and categorized under Education & Reference. This app offers a comprehensive guide on Islamic knowledge that covers a wide range of topics such as seeking knowledge, writing, issuing legal opinions, and more. The author, Abu Al-Layth Al-Samarqandi, has collected the information from various books and provided the readers with clear and concise explanations. The content is presented in a well-organized manner, making it easy to navigate and understand. The app includes information on the etiquettes of prayer, sleeping, eating, and drinking, among others. The book provides insights into the teachings of the Quran and the Prophet's sayings and actions. Overall, بستان العارفين is an excellent app for anyone looking to expand their knowledge of Islam.