Poupança is a free Android app developed by JETSSOFT that calculates the savings amount and the corresponding interest rate for a given period based on the current interest rate. It is a useful app for those who want to track their savings and plan their finances accordingly.

The app is easy to use, with a simple and clean interface. Users can input the initial deposit amount, the monthly deposit amount, and the duration of investment. Poupança then calculates the final savings amount and the interest earned during the investment period.

Overall, Poupança is a great app for those who want to keep track of their savings and calculate their future earnings. The app is free to use and can be downloaded from the Google Play Store.