Largest franchise of Weight Watchers International. Weight Watchers offer various products and services to assist in healthy habits, including weight loss and maintenance, fitness, and mindset. Program delivered in three combined ways: online via its mobile app and website, coaching online or by phone, and optional in-person meetings around the world. The core philosophy behind Weight Watchers programs is to use a science-driven approach to help participants lose weight by forming healthy habits, eating smarter, getting more exercise, and receiving support.