الحائية is a free Islamic education and reference app from SEM-DEV Inc. that focuses on the beliefs of Ahl al-Sunnah wa al-Jamaah. It is based on the famous book by Ibn Abi Dawud, which covers the fundamental principles of Islamic faith. The app is available on the Android platform and is suitable for students, scholars, and anyone interested in learning about Islamic beliefs.

The app's main features include a user-friendly interface, the ability to bookmark and highlight favorite sections, and a search function for easy navigation. The app also includes audio recitation of the book, making it easier for users to understand and memorize the content. With its focus on Islamic beliefs, الحائية is an excellent resource for those looking to deepen their understanding of Islam.