To design an app that improves the wine buying experience at a grocery store, we need to consider the pain points of customers when they are purchasing wine. First, we can have the app recommend wines based on the customer's taste preferences. Customers can input their preferred flavor profiles, and the app can suggest wines that match those preferences. This can simplify the decision-making process for customers and help them find a wine that they will enjoy. Second, we can integrate a feature that allows customers to scan the label of a wine and receive more information about it. This can include tasting notes, reviews, and food pairing suggestions. This will help customers make an informed decision about the wine they are purchasing. Third, we can have the app provide wine ratings and reviews from other customers. This social proof can help customers make a more confident decision about the wine they are purchasing. Lastly, we can incorporate a feature that allows customers to keep track of their wine purchases. This can include a history of past purchases and a wishlist for future purchases. This feature can help customers keep track of the wines they have tried and enjoyed, as well as the ones they want to try in the future. Overall, by incorporating these features into the app, we can improve the wine buying experience for customers by providing personalized recommendations, detailed information, social proof, and a way to keep track of their purchases.