OAS Exam Prep is a free exam preparation app developed by Sana Edutech for students preparing for the Odisha Civil Services Examination (OCSE), Odisha Public Service Commission (OPSC), and Odisha Administrative Services (OAS) exams. With more than 15,000 questions properly categorized in multiple sections, this app covers a wide variety of subjects, including general knowledge, Indian polity, economics and commerce, freedom movement, history, geography, and science subjects such as physics, chemistry, botany, and zoology.

The app has a fast and user-friendly interface, designed to work for all screens, including phones and tablets. It presents the questions in an Android app quiz format, allowing students to review their answers against the right answers and learn fast. The app also provides detailed reports on the performance of all quizzes attended, and there are no limits on quiz attempts, allowing students to retry any number of times. Overall, OAS Exam Prep is an excellent exam preparation app for students who want to improve their general awareness and knowledge. Please note that this app is developed by Sana Edutech, a private entity, and is not affiliated with the Odisha exam conducting authorities.