ShopFast is an app that allows users to create grocery shopping lists and get recipe ideas based on the items already in their lists. It aims to be better than paper lists by allowing the list to stay with the user digitally and providing recommendations for new recipes. The app is designed for use in stores, with a focus on quick and easy access to key information through limited screens. Early iterations found the concept too simple and confusing, so additional screens were added to better illustrate the workflow. Highlighting input fields and proposing recipes without extra ingredients were also identified as important to improve usability and engagement with the app.