"HA Go" by Hospital Authority (HA) is a comprehensive app designed to streamline healthcare management for patients. It offers a range of features to help users effectively manage their healthcare needs. Patients can easily access and review their upcoming appointments, book specialist outpatient clinic appointments, pay fees, and access billing information. The app also includes a rehabilitation program with multimedia materials for guided exercises, a medication section for dispensing records and drug information, and a self-measurement feature for tracking various health data. Additionally, patients can receive health information and instructions from healthcare professionals through e-pamphlets, videos, and soundtracks within the app. "HA Go" is available in both Chinese and English, with more features expected to be added in the future.