Riyaz us Saliheen is a compilation of hadiths by Imam Nawawi. This Islamic reference book is now available in Urdu language and is an excellent resource for those seeking knowledge about Islam. The app provides access to other important books such as Sahih Muslim, Sahih Bukhari, Abu Daud, Tirmizi, and Nasai in Urdu.

The app is designed for Android users and is available for free. The interface is user-friendly, and the app is easy to navigate. The app is categorized under Education & Reference and the sub-category of Books. This app is a must-have for those who want to deepen their knowledge of Islam and its teachings.