Does iCalendar count as an account?

Using the free version with two email accounts.  I use Apple’s iCalendar on our iPhones.  To use the iCalendar from within eM Client, does it count as another (a third) account?  I will in all likelihood be upgrading to the paid version, but just want to check things out further before doing so.   

During the initial 30 day evaluation period, before activating with a Free or Pro License, you can configure as many accounts as you like.