New York startup Oyster has expanded its Netflix for books reading app to the Android marketplace for both phones and tablets.

Oyster operates an unlimited subscription service for ebooks, with users gaining access to more than 500,000 books and Oysters curation feature which aims to recreate the feeling of a book club. It has deals in place with publishers HarperCollins and Simon & Shuster, and is working at attracting even more major publishers.

“When designing for Android you have to take numerous screen sizes into account (over 4,000 to be exact) so building a responsive typographic system is critical,” said Willem Van Lancker, co-founder and CPO, in a statement to TechCrunch.

“To take on this challenge, we redesigned our reader from the ground up – including a reworking of typography, the introduction of a new color system, and improvements to text sizes, margins, and more.”

The company has also added extra features to its book detail pages, which have been redesigned and now include the approximate time it will take to finish the book, as well as short reviews on hundreds of its most-read titles. These changes have also been rolled out to the iOS version as well.