No, Kassatellen.nl is a digital cash book, aiming to simply workflow of registering all money payments/transactions in your business.
A cash book is a subsidiary of the general ledger in which all cash transactions during a period are recorded, and they are recorded in a chronological order.
The general aim is to prevent any transaction in being overlooked and to simplify accounting by detailing all transactions in one place.
To register all orders of the guests in your business and to settle payments with the guests, you still need a cash register system such as Lightspeed or UnTill which can be easily integrated into the Kassatellen.