The Hospital Authority (HA) mobile application Join HA provides a one-stop mobile platform for the public to explore career opportunities in HA and apply for job openings easily via mobile devices. Join HA supports auto-login function with fingerprint and face recognition. By using the Join HA users can receive notifications such as interview notification and are able to add new item to the local calendar of their devices.

Join HA offers both traditional Chinese and English versions. It supports smartphones and tablets running Android 5.0 or above.