The INSS Facturación Facultativo mobile application is designed for insured individuals under the voluntary regime of the Nicaraguan Social Security Institute (INSS). It streamlines the process of accessing and reviewing issued invoices, pending payments, payment history, and conducting various tasks such as requesting exclusive invoice delivery via email and verifying IPSS affiliation, all through a mobile app. This app, provided by the Nicaraguan Social Security Institute, offers a modern, innovative, and free solution for insured individuals under the voluntary regime to conveniently access billing information, data, and manage interactions with the Social Security system using the latest technological trends.