You enter appointments and notes in any of a variety of natural formats.
Birthdays show ages.
Appointments which include a time can automatically set a 'pop-up alarm clock' which notifies you at a given advance interval. Different categories of appointments can be tracked for preparation of group meetings or for summaries of specific activities. Multiple calendars can be viewed simultaneously. The sorting and archiving options let you keep track of past activities for business purposes. Ample Notice is easy to use right away, but is powerful enough to handle a variety of complex applications.