Kua is a tax management and personal finance mobile application developed by Kuantik, a leading SAT (Servicio de Administración Tributaria) intermediary in Mexico. The platform is specifically designed for salaried individuals in Mexico who need to manage their fiscal documentation and compliance obligations. Kua automatically synchronizes users' tax documents with the SAT system, providing centralized access to tax receipts, CIEC credentials, Constancia de Situación Fiscal, and Cédula de Identificación Fiscal documents in a single mobile interface. The application enables users to easily access invoices they issue and receive, download multiple receipts simultaneously, and share fiscal documentation with contacts. Kua categorizes expenses according to SAT product and service codes, helping users organize their financial information for tax purposes. The platform also offers invoicing capabilities directly within the app and supports two-factor authentication for security. Users can manage fiscal contacts and access payroll receipts without needing their CIEC credentials through Kuantik invitations. The app is developed by OSSA IT SAPI DE CV and is available for download on both iOS and Android platforms. Kua positions itself as a digital assistant for financial and fiscal needs, simplifying the relationship between Mexican taxpayers and the tax authority. The company is based in Mexico City, with support operations linked to the Goldsmith address in Polanco. As a tax compliance and personal finance management tool, Kua serves the growing market of digitally-enabled Mexican workers seeking streamlined access to their fiscal documents and improved financial organization.