Personal health monitoring is a hot topic. With bracelets and other wearables, we keep track of our heart rate, exercising, sleep, and more. We are becoming our own doctors and coaches. Improving citizens' health brings the society significant savings, besides healthier citizens. Health data also has important value beyond healthcare, e.g. in insurance and advertising. However, risks on privacy, data management, information interpretation and incorrect health diagnosis and treatments exist. This panel discusses the promise and risks related to mobile health apps, highlighting both research and industrial aspects related to the current trends.