Oyster, an e-book subscription service that originally launched on a limited basis for the iPhone last month, has been expanded to the iPad and is now available for all users. Described as Netflix for e-books, Oyster offers access to more than 100,000 e-books for a $9.95 monthly fee. The service is currently limited to iOS and is growing rapidly, with additional titles being added on a regular basis. Oyster for iPad functions similarly to other e-book reading apps like iBooks, allowing users to select content from a dedicated library that can be read within the app. Pages are turned via scrolling, and it incorporates a darker night time reading mode. The app functions in both landscape and portrait mode, and books that are downloaded can be synced between devices.