RAS- History of Rajasthan is an Android app developed by HC CHOUDHARY. It is a collection of important notes for the Rajasthan Public Service Commission's RAS exam. The app offers a comprehensive history of Rajasthan, covering all the significant events, personalities, and institutions of the state. It is a free app available on the Google Play Store under the Education & Reference category.

The app's interface is simple and easy to navigate, with well-organized notes and a search function for quick access to specific topics. The notes are concise and informative, making them an excellent resource for RAS exam aspirants. One drawback is the lack of interactive features, such as quizzes or flashcards, to aid in learning and retention. Overall, RAS- History of Rajasthan is a useful app for those preparing for the RAS exam and seeking a quick reference guide to the history of Rajasthan.