কলম রজ ও নরয় রসলতর is an educational and reference app developed by Islamic Education. It is a free Android app that falls under the category of Books. The app provides a comprehensive collection of information related to the validity of prayers in Islam.

The app includes various sections such as the translator's notes, origins and sources, an overview of Imam Ahmad Raya, hadiths and fatwas, Sharhus Sudur by Imam Jalaluddin Suyuti, speeches by Hazrat Abdul Qadir Jilani, Akhbarul Akhyar by Hazrat Abdul Haq Mohaddis Dehlvi, and the teachings of Shah Waliullah Mohaddis Dehlvi. It also contains valuable insights from Nade Ali and Shah Abdul Aziz.

The app offers a range of benefits and concludes with a useful conclusion. It also features a section called Kalam-e-Raz, which includes poetry and translations. With its extensive content and user-friendly interface, কলম রজ ও নরয় রসলতর is a valuable resource for those seeking knowledge about prayers in Islam.