UPSC Pre is a free Android app developed by UPSC Pre that aims to help IAS aspirants and anyone preparing for exams like UPSC Prelims (CSE), CDS, CAPF, NDA, and State public services. The app's vision is to make the preparation process easier, smarter, and enjoyable by using the power of technology. The app contains previous years' questions and similar questions asked in various exams conducted by UPSC, along with explanations and categorized topic/subject-wise.

The app's main feature is the categorization of UPSC prelims papers topic-wise, keeping in mind the syllabus of the examination. The analysis is given in a pie chart for easy interpretation, which helps in prioritizing the time according to the weightage of questions asked in UPSC prelims. The search bar allows users to search for any topic and get all the questions asked on that topic in different exams conducted by UPSC. The app also categorizes all the questions year-wise, making it easy to navigate the questions asked in different years.

Overall, UPSC Pre is a great app for UPSC aspirants looking to clear prelims in the first attempt itself. The app is under constant development, and the developers are taking user feedback to constantly improve the app.