Notes Next Door is an Android application developed by Notes Next Door, designed to provide students with a one-stop-shop for all their study material needs. The app offers a wide range of class notes, sample and past-year exam papers for competitive exams, all available in one convenient place. Users can read everything online before buying hard copies, and can enjoy special discounts on hard copies. The app also provides regular updates to all the subscribed PDFs.

The interface of the app is user-friendly and easy to navigate. The app provides a search bar that helps users to find the desired notes or papers easily. The app is free to download and use, which makes it accessible to all students. The app is an excellent resource for students who want to prepare for competitive exams or need additional study material for their classes.