Shelf: What's on Yours is a free iPhone application developed by Koodos Inc. It is a unique program that combines the features of Spotify Wrapped, Goodreads, and Letterboxd. The app allows users to capture and keep track of what they are watching, reading, or listening to throughout the week.

With Shelf, users can not only document their own media consumption but also see when someone they know is engaging with the same content. This feature enhances the social aspect of the app, creating opportunities for shared experiences and discussions.

At the end of each week, Shelf provides users with a comprehensive recap of their media consumption, allowing them to see how their tastes are evolving over time. Users have full control over what they showcase on their Shelf, ensuring privacy and personalization.

Additionally, Shelf allows users to explore their friends' Shelves, delving deeper into the shows, books, music, and more that they already enjoy. It also serves as a platform for discovering new favorites that are waiting to be explored.

Overall, Shelf: What's on Yours is an innovative and convenient tool for keeping track of one's media consumption and connecting with others who share similar interests.