green - Healthy Lunch at Work - is a lifestyle app designed for iPhone users, developed by togo CO.LTD. It offers a convenient way for office workers in the Shibuya area to enjoy over 200 healthy and affordable lunch options from more than 100 participating restaurants.

Users can explore a variety of menu items with discounted prices, such as a salad bowl set or grilled pork loin with barley rice, through the app. The process is simple - users select a menu item, show the app screen to the restaurant staff to place an order, and present the app screen again for payment at checkout.