- Personalized weather services
- Current weather information, including temperature, relative humidity, rainfall, wind direction and speed, and weather photographs
- Weather photos and rainfall data updated at 5-minute and 15-minute intervals, respectively
- Other data updated in 10-minute intervals
- Notification services for weather warnings, Special Weather Tips, and Location-based Rain Forecast through the Apple Push Notification service (APNs)
- Option to use automatic location service or designate "My Location" on the map
- Meteorological data displayed on "My Location" or the station added is provided by meteorological stations nearby
- Location displayed in the function of "My Weather Report" is provided by a third-party provider
- Clock on the main page of the app is displayed with HKT synchronizing automatically to the Observatory's Internet Time Server
- Link to browse the Observatory's Facebook Page
- Option to log in to the user's own Facebook account
- Note that the app is free, but users will be charged by their mobile network service provider on the use of data service.