1746 Rio is an Android application developed by Gol Mobile that offers a convenient way to request municipal services and check the status of previously opened protocols. It also provides access to the social networks of 1746, the central customer service of the Rio de Janeiro City Hall.

The app is free to use and falls under the Utilities & Tools category. With 1746 Rio, users can easily submit requests for municipal services such as street cleaning, tree pruning, trash collection, and more. They can also track the status of their requests and receive notifications when there are updates. The app's social media integration allows users to keep up with the latest news and updates from 1746 and the Rio de Janeiro City Hall.