iBalanx is a smart footwear system for real-time balance monitoring. Using wearable motion sensors, the system collects relevant data from users and analyzes their balance performance and gait in both static and dynamic situations. When fall risks are detected, the system will send instant messages to users through a mobile app, prompting them to improve their postures to avoid falling. The system supports real-time data upload to Cloud, allowing healthcare professionals to remotely monitor the balance performance of patients and elderly people for more efficient fall prevention and protection control. It can also be used as a balance training device.