Campbell's Soup is developing a digital marketing plan to maintain brand loyalty and attract younger buyers to address its slow growth. The plan involves launching a mobile app called "Eat Smart" to provide daily recipes, nutrition tracking, online coupons, and community discussion forums. Campbell's will promote the app on Facebook, Twitter, and its website starting in August, with follow up promotions through January, aiming to increase sales and engage more youth with a $2.5 million budget.