Dólar Agora is an Android app that provides the current exchange rate of the US dollar in Brazil. The app offers a variety of tools to make the user's life easier regarding foreign currency. It allows users to share the cost of the US currency through social media or instant messaging networks. The exchange rate is updated every ten minutes based on reports from various channels such as Bloomberg, Yahoo! Finance, and the Central Bank.

In addition to the exchange rate, there is an integrated converter that provides quick access to convert US dollars to Brazilian real and vice versa. The app also offers other sections such as a graphics tab that displays the historical dollar fluctuation in three different periods - today, last 7 days, last 30 days, and last year. Moreover, Dólar Agora provides an alert system that notifies the user if the US paper reaches a certain level or undergoes any variation.

The app also allows users to check the exchange rate of other currencies such as Euro, Argentinian Peso, Japanese Yen, and Bitcoin within their phone. The exchange rate is verified all the time based on reports from various channels. Leave your feedback and suggestions in the comments to help the developers improve the app even more!