Villa Thalgo is a spa located in Paris that offers various packages through their mobile app to target high-class Parisians and hotel guests. The app allows users to book visits, bring friends, earn points for referrals, and receive discounts. It also includes social features like forums for reviews and a localized GPS system to notify members of nearby offers. The spa promotes their app through word-of-mouth, social media, and displaying customer satisfaction on their website and app to attract more potential customers.