Fatimid Cal Pro is a comprehensive dual calendar application featuring the Hijri and Gregorian calendars. It is based on the Fatimid calendar version used during the Fatimid age in Egypt, attributed to Imam Jaffer Al-Sadiq PBUH. This app offers a seamless integration of the two calendars, along with essential features like prayer times, Qibla direction, and a list of Islamic events.

The app allows users to switch between the two calendar themes, add events with alarms, and easily navigate to any year. It provides accurate prayer times based on the user's device location, with the ability to schedule the next 7 days' prayer calls offline. Additionally, it includes Islamic event details with corresponding Gregorian dates.