If you have ever wondered what would happen if you were to invest in the stock market, but still wanted to be in control of the amount of money you invested, then this is the app for you.

Grana is a tool that allows you to get a free and easy way to manage the income tax of your investments. With this app, you don't have to worry about the stock exchange rates, nor do you have to spend time and money in order to pay your taxes.

The process is very simple and is made possible by the innovative technology from B3, the financial service provider from the Stock Exchange of Brazil.