UPSC Exam Book Hindi is a free Android app developed by Nil Infotech. It falls under the Education & Reference category and is a must-have for UPSC aspirants. It covers all the subjects necessary for the exam, including Indian Constitution, General Knowledge, Indian History, Indian Geography, Indian Politics, Science, Human Body, Indian Culture, World Affairs, Computer GK, Sports, Indian Economy, and more.

This app offers a comprehensive collection of questions related to the Indian General Knowledge exam. It provides a significant amount of data, including all the relevant topics, subjects, and questions that will help you prepare for the UPSC exam. The app's user interface is easy to navigate, and the information is well-organized and presented in a clear and concise manner.