Altera.app is not only a 100% free invoicing application for all users. It is also the “Financial Command Center” for clients of the Altera accounting office.Using Altera.app you will be able to:- instant issuing and sending invoices to your contractors,- collective payment of cost invoices on a selected date,- quick exchange of messages and documents with your accountant,- view a real statement of your finances.With Altera, accounting becomes a value, not a chore.Check out our original application today!