Fiqh-us-Sunnah is an educational and reference app developed by Muhammad Wasim Butt. It is the certified and authentic English translation of the book written by Sayyid Saabiq. Considered the first writing of its kind, Fiqh-us-Sunnah brings together the four major madhahib in a comprehensive treatment of Fiqh matters. The app allows users to view topics by specific chapters, search for a particular topic, take notes for future reference, bookmark favorite topics, and share them via email, Facebook, and Twitter.

The app offers several features to enhance the user experience. Users can set a reminder to read a random topic daily, swipe back and forth to read the next or previous topic, and perform a full text search with highlighted results. The ease of reading through the entire book, taking notes for specific topics, and bookmarking topics for easy access are also notable features. Additionally, the integration with social media platforms allows users to share topics with friends and family.

Sayyid Saabiq, the author of Fiqh-us-Sunnah, wrote the book in the 1940s at the request of Ustadh Hassan al-Banna, the founder of the Muslim Brotherhood. Every Fiqh ruling in the book is based on the Qur'an and Sunnah, and Saabiq objectively dealt with all four madhahib, without any preferential treatment. Besides his academic work, Saabiq was a noted Islamic activist who fought alongside the Mujahideen in Palestine and visited mosques around the world to lecture on Islamic teachings.

Fiqh-us-Sunnah is a valuable resource for Muslims seeking comprehensive and authentic knowledge on Fiqh matters. With its user-friendly features and extensive coverage of topics, this app is a must-have for anyone interested in deepening their understanding of Islamic jurisprudence.