Contacts, phonebook, calls (SECRETARY) is a free Android application developed by WebAS Design. It serves as a comprehensive contact manager, ideal for secretaries, executive assistants, sales managers, and accounting managers, among others. However, it can also be used for personal purposes such as a business card holder or an organization employees catalog.

The application allows users to create and organize groups and add an unlimited number of contacts within these groups. It functions as a phone book, enabling users to easily search for contacts and make calls or send emails directly from the app. Contacts can also be shared with others and backed up using Google or the app's proprietary backup mechanism to an SD-card.

One notable feature of the application is the ability to view upcoming birthdays of contacts and set automatic reminders for these special dates. Additionally, the app offers the option to sync data with the device's phone book for seamless integration.

Contacts, phonebook, calls (SECRETARY) is a user-friendly and versatile contact management application that provides a range of useful features. It is completely free to use, though it does include banner advertising.