Add Bottles to Your Collection: Easily add any bottle to your collection and track what you own. Add Bottles to Your Wishlist: Keep track of bottles you want to buy by adding them to your wishlist. Buy and Sell Cups in the Marketplace: Buy cups from your wishlist directly in the app from other users Use the COTD (Cup of the Day) Calendar: Track which bottles you use daily with the COTD calendar. View Collection Progress: Monitor your progress by seeing how many bottles you've collected