The Firstleaf Pocket Sommelier is a lifestyle app developed by Firstleaf.com Inc. that allows users to manage their Firstleaf account conveniently from their iPhone. With this app, users can update their settings, manage their orders, and easily rate wines. The app simplifies the process of rating wines by allowing users to scan the UPC on the back label and rate the bottle with a simple tap. The more wines users rate, the more accurate the app's recommendations become. Whether it's a Firstleaf exclusive or a wine from a local bodega, the app makes it easier than ever to learn about and rate the wines you try.

For club members, the Pocket Sommelier app provides personalized recommendations that can be accessed anywhere. Users can confidently explore the world of wine and make informed bottle selections using Firstleaf's proprietary technology. By searching for a wine or scanning the UPC from the app, users can view product details and their personal match to the wine before making a purchase or order. The app also offers a still-experimental feature that provides personalized recommendations for non-Firstleaf wines. Users can search for wines by name, varietal, or scan the label UPC to access details and find their recommended zone for a wide range of US wines.

The app's recommendation system works by allowing users to rate wines they have tried and using their ratings history to understand their taste palette. By rating at least 6 wines, users can unlock the recommendation zones. The Comfort Zone represents wines that align with the user's taste preferences, the Explorer's Corner offers wines to explore within their tastes, and the Adventurer's Edge presents more risky or unknown selections. The more wines users rate, the more accurate the app's recommendations become.