This APP is the version for Accounting Firms that use the ContaDIGITAL® Platform. To enter, the same credentials (username and password) of the Web version are used. In this application you can: 1.- Issue and cancel all types of electronic invoices 4.0 (CFDI) in XML and PDF format (Invoices, receipt of fees, advances, application of advance, credit notes). 2.- Add Clients and their billing information. 3.- Add Products (with SAT code). 4.- Send invoices by email. 5.- Consult data on invoices r