A birthdaycalender sharing it's information through SkyDrive (edit once, available to all your installations). NO FACEBOOK INTEGRATION! The info is shown in a year- view, birthdays are accentuated. Easy manipulation is an advantage compared to the alternative apps. 29 february is always shown so everybody gets its birthday. The orientation of the device influences the lay-out of the application. The tile and lockscreen warn you for birthdays!