Cálculo Combustível is a free Android app developed by Rafael Ferreira de Almeida. It falls under the category of Utilities & Tools and aims to help users determine the most cost-effective fuel option for their vehicles.

The app provides a simple calculation to compare the prices of ethanol and gasoline. By dividing the price per liter of ethanol by the price per liter of gasoline, users can determine which fuel option is more economical. If the result is greater than 0.7, it is recommended to fill up with gasoline. Conversely, if the result is lower, it is advised to choose ethanol.

Cálculo Combustível offers a straightforward solution for users to make informed decisions about fueling their vehicles. With its user-friendly interface and efficient calculation method, this app is a handy tool for anyone looking to optimize their fuel expenses.