Durusul Fiqhiyah Jilid 1 is an Android application developed by Kitab Kuning Digital that offers a comprehensive guide to Islamic law. The app is ideal for students studying at Islamic schools, from elementary to high school levels. It is also an excellent resource for anyone seeking to expand their knowledge of Islamic jurisprudence.

The app is focused on AlHabib Abdurrohman bin Saqqaf bin Husein Assaqqaf's book, Buku Fiqih Dasar Jilid 1. The app is divided into chapters, each covering a specific topic related to Islamic law. The app provides an in-depth analysis of each topic, making it easy for users to understand the complex concepts of Islamic jurisprudence. The app's interface is user-friendly, making it easy for users to navigate and access the information they need.