NFSe Mobile is an Android application designed specifically for service providers who are SIMEI optants or individuals. It allows them to generate National Standard Invoices (NFS-e) for services that have been previously registered as favorites on the NFS-e Web Emitter. The app presents the fields required for the invoice to be filled in and generated with just a few taps.

One of the advantages of NFSe Mobile is the possibility for users to quickly access their most recently generated invoices through the "Issued NFS-e" functionality. Additionally, the app saves invoices that were generated while offline to the "Unsent NFS-e" option and generates a QR code that can be scanned by the service recipient using their mobile phone.

It is important to note that only taxpayers registered in municipalities that have adhered to the agreement and allow the use of the app can use NFSe Mobile. Before the first use, users must register on the NFS-e Web Emitter by filling in their information and preferred settings. Finally, the user must register their favorite services on the NFS-e Web Emitter to enable the app to generate the NFS-e for those services.