أسباب النزول - للواحدي is a book search app for Android devices, developed by So Smart Apps. The app falls under the Education & Reference category, specifically Books. The book is written by Imam Ali bin Ahmad bin Muhammad bin Ali Al-Wahidi Al-Nisaburi Al-Shafi'i (Abu Al-Hasan), a prominent Islamic scholar. The app provides a comprehensive search feature, allowing users to search for specific chapters, verses, and even individual words within the book.

The app also offers various customization options to enhance the user experience. Users can adjust the font size and color, choose from eight Arabic fonts, and select from hundreds of background colors and images. The app also features a night reading mode, making it easier on the eyes during low-light situations. Other features include a favorites list, notes section, and the ability to share and copy text. Overall, أسباب النزول - للواحدي is a useful app for anyone looking to study or reference this important Islamic text.