Please check out our website www.d-parts.de/en/faq for frequently asked questions. FontaFit plus is an easy-to-use companion app for FontaFit smart bracelets and offers basic functions that record and evaluate your daily activities. This app is compatible with the following models: FontaFit 155CH, 165CH, 260CH, 265CH, 360CH, 390CH. Functions: • The Start view gives you a quick overview of your sporting activities, such as steps, distance, calories, daily goal, as well as sleep and heart rate