Does Billings require Address Book or Daylite for client entry?

I do not want my Billings data to share the same data as Address Book.

I want Billings data to be completely independent of any other application.

Billings uses Address Book for client entry.

If you create a new client in Billings that person will be created in Address Book.

If you create a new contact in Address Book you will be able to add them in Billings.