مجموع الفتاوى, developed by marqoom.org, is a free Android application that provides an extensive Islamic legal encyclopedia. The encyclopedia is one of the largest legal encyclopedias, covering various topics such as theology, logic, philosophy, debates, Islamic Jurisprudence, interpretation, mysticism, and more. The encyclopedia is not limited to the Hanbali school of thought, and it also sheds light on the fact that Ibn Taymiyyah was a diligent scholar who was not a prisoner of the Hanbali school.

The encyclopedia is known for its inclusiveness, diversity, depth, smooth style, and unity of approach. It is a comprehensive reference book that eliminates the need for acquiring multiple books on the same topics. The application is easy to use, and the information provided in the encyclopedia is accurate and relevant.