Nila Tamil Book Store is a free Android application that provides a vast collection of Tamil novels, stories, and historical articles in one place. The application offers a user-friendly interface and is easy to navigate. You can download all the available content for free and read them offline. Some of the popular novels include Kalki's Ponniyin Selvan, 1001 Nights, and works from popular writers like Sujatha, Vairamuthu and historical contents such as India History, Tamil history, etc.

The app has a variety of reading modes like Day, Night, Sepia, Green, Grey, etc. to suit your preferences. The Tamil texts have been rendered in clear fonts and backgrounds, making it easy to read without any distractions. You can also bookmark pages for later reading and download them for offline reading. The app's content catalog is continuously expanding, and fresh content is added regularly.

Overall, Nila Tamil Book Store is an excellent application for anyone who loves reading Tamil books. The app is well designed, easy to use, and offers a vast collection of Tamil literature. The application does not have any personal or contact information, and the review is based on the information provided.