"زاد الصالحين" is an Android application designed to make Islamic reference and education more accessible. The app features the Holy Quran, Tafseer-e-Mubeen, and audio recitation of the Quran without the need for internet connection. Additionally, it includes more than fifty supplications, fifty ziyarat, Islamic calendar, daily and monthly acts, Islamic occasions, and sayings and wisdoms that appear upon entering the app.

One of the best things about "زاد الصالحين" is its search functionality, which allows users to search for specific verses or supplications. It also offers customization options such as changing the font and background color, font size, and automatic scrolling. Moreover, users can add their supplications and topics to the app, making it a comprehensive Islamic reference for anyone seeking to strengthen their faith.