Manage Birthdays is a handy app for creating a birthdays calendar. The service does not have an Internet connection, so no worries about privacy. All you need to do is to enter the desired name and select an age.

It will then generate a calendar with all your friends and family. If you want to have more control over the appearance of the notification, you can set it to appear as a notification or as an alert. You can even set it to appear as many times as you want to make sure you remember all your friends and family members.

This app does not have the capability to share the birthdays with friends or family members, but it is easy to share the calendar with a friend via SMS or email.