FirmaFácil

Welbits

In-app purchases

About this app

FirmaFácil is a standalone document signing application for your device. Sign PDF files locally with your digital certificate and complete AutoFirma-compatible procedures while maintaining control over each request.

SIGN PDF DOCUMENTS
• Review the document and the selected certificate before signing.

• Create a PAdES signature on your device.

• Save the signed copy wherever you prefer.

AUTOFIRMA-COMPATIBLE PROCEDURES
• Open compatible affirm:// requests from online portals.

• Use the built-in browser when a website expects a desktop signing process.

• Review the portal, the transaction, the documents, and the certificate before approving anything.

YOUR CERTIFICATES REMAIN YOURS
Private keys remain protected in the Android credential store and are never exported to a website. The signing takes place on the device, and FirmaFácil does not require an account.

UNLOCK WITH A SINGLE PAYMENT
Import and manage certificates, review documents, and check signature requests without paying. Creating new signatures requires a one-time, non-consumable lifetime purchase. You can restore the purchase from Settings.

Compatibility depends on the procedure and the electronic office. FirmaFácil is independent and is not affiliated with, endorsed by, or the official AutoFirma application of the Government of Spain.