ATGO- Gestão Integrada de Atividade is a mobile application developed by Autoridade Tributaria e Aduaneira (AT) for iPhone users. It provides a single access point for managing and viewing professional activity data registered with the tax and customs authority. With ATGO, users can perform various operations and access data related to their professional activity.

The app enables users to issue invoices, receipt-invoices, and receipts, as well as cancel them. Additionally, users can create templates for the documents they issue and share the supporting documents. ATGO also allows users to classify and reclassify expenses, which is particularly useful for tax purposes.

Overall, ATGO- Gestão de Atividade is a useful mobile app for managing and tracking professional activity data on the go. It is free to use and available for download on the App Store.