The Arabic calendar is an useful app that has the features of :
Arabic-Gregorian-Arabic Date Conversion,
Date adjustment according to moon sight,
Highlight the Islamic/important/national dates,
Daily Prayer Times,
Monthly Prayer Times,
Athan,
Qibla Direction,
The Quran Recitation,
App Widget to show the recent prayer times on home screen,
Personal Income and Expenditure Manager,
Currency Converter,
Location & Method based prayer time settings,
Direct Jump to another year of calendar (tap on the month title for 3 seconds).

A free version (contains ad) of this app is available at https://play.google.com/store/apps/details?id=com.rahasofts.arabiccalendar

visit http://www.muthosoft.com for more information