Presta CASH is a free Android app developed by División Informática that offers loans to its users. The app calculates the Annual Nominal Rate (TNA), Annual Effective Rate (TEA), Effective Annual Total Cost (CFTEA), and Annual Nominal Total Cost (CFTNA) based on the user's credit history and the number of installments requested.

The app offers loans with TEA rates ranging from a minimum of 300% to a maximum of 590%. Users can choose to pay back the loan in 2 to 18 installments in pesos, with the first installment due on the 5th day of the following month. The minimum repayment period is 65 days, while the maximum period is 18 months. The interest rates range from 40% to 350%.

For example, if a user borrows 1,000 pesos for 6 months, they will have to pay 290 pesos per month. The formula used to calculate the installment amount is "(loan amount * (1+interestnumber of installments", with the last whole digit rounded up to either 0 or 5, depending on the occasion.

Overall, Presta CASH is a useful loan app for Android users, with varying interest rates and installment options to suit their needs.