مسند إسحاق بن راهويه is a free Android app developed by So Smart Apps and falls under the Education & Reference category of Books. The app contains the book "Musnad Ishaq bin Rahwayh" authored by Abu Ya'qub Ishaq bin Ibrahim bin Makhled bin Ibrahim Al-Hanzhali Al-Marwazi, famously known as Ibn Rahwayh. The book is a comprehensive collection of Hadiths (Sayings of Prophet Muhammad) and is an essential read for Islamic scholars and students. The app has an easy-to-use interface and provides various features, including the ability to change font size, font color, and background color with over hundreds of colors and themes to choose from. Additionally, there is a night mode feature, a quick chapter navigation menu, and a search function to find any word or phrase within the book. Users can also save their favorite chapters, make notes, and share them with others.