ContactKeeper is a contact database system designed to store your contact information about friends, family and others at one single location. Now you do not lose your contacts on losing your sim card or phone that stored them. It also has a tool called birthday reminder that ensures that you never again forget a birthday again. It generates a special birthday calendar with the dates you enter for the birthdays of the contacts in your database. It has an intuitive interface with simple buttons for adding, editing, opening and removing contacts. You can add name, address, date of birth, phone numbers, email addresses and other information for each contact.