RRB NTPC Group-D Reasoning Qu is an Android application developed by The Knowledge Express. It is a free educational and informational app that contains previous years' question papers of various railway exams. The app has three sections that include RRB NTPC Previous Years Reasoning Solved Questions, RRB Group-D 2018 Reasoning Solved Questions, and RRB ALP & Technicians 2018 Reasoning Solved Questions.

The app is designed to help students prepare for railway exams by providing them with previous years' question papers. The app's interface is user-friendly, and the questions are well-organized in different sections. However, the app lacks a search feature, which would have made it easier for students to find specific questions. Overall, RRB NTPC Group-D Reasoning Qu is a useful app for students preparing for railway exams.