Billin offers billing software solutions for businesses, allowing SMEs and freelancers to manage all their invoicing cycles: the creation of the bill itself, its delivery, tracking, and payment.On February 17th, 2021, TeamSystem acquired a majority stake in Billin. The terms of the transaction were not disclosed. Programa Facturación Online. Crea y envía facturas con Billin, el programa de facturación online más sencillo ¡Empieza totalmente Gratis!