It's a calendar app that supports daily, weekly, monthly and yearly calendar functions. It supports public holidays for +30 regions. Voice reminders are supported as well.
Lunar phase, sunrise and sunset time are supported. Over 10 widgets are available, including agenda and calendars, clock, world cities time, and sticky note with voice recording feature, counter, Todo list, etc.
Weather service for selected locations are provided by several providers. See the following link for more info.