FFS Reader is an iPhone application developed by Valeriya Pekar, available for free in the Education & Reference category under Magazines & Newspapers subcategory. This app serves as a browser specifically designed for fan fiction stories, offering a more convenient way to access content from the AO3 website.

The main focus of FFS Reader is to provide users with a streamlined reading experience for fanfics, ensuring that all statistics such as views and likes are directed back to the original work. The app's functionality is intentionally limited, with occasional feature updates by the developer. Notably, FFS Reader does not store any works within the app or on external websites, functioning solely as a browsing tool for fan fiction enthusiasts. With no ads or payments required, users are encouraged to support the app for future development.