Don Préstamo is a free finance app available for Android operating systems. Developed by Don Préstamo, this app is designed for residents of La República Mexicana who have stable monthly incomes and are 18 years or older. The app offers loans with a minimum period of 91 days and a maximum period of 120 days.

The app calculates the interest on loans based on the amount borrowed and the repayment period. For instance, if you took a loan of $10,000 with a repayment period of 6 months, the monthly payment would be $300, and the total payment would be $10,642.56, including a service fee of 6% and interest of $The app also calculates the interest using the formula, Interests = $10,000 * [(6%/12) * (1+(6%/12))^6]/{[(1+(6%/12))^6]-1}) * 6 - $10,000, which amounts to $246.63.

Don Préstamo app ensures the security and privacy of user data by encrypting it with SSL protocol of 256 bits. The user's personal data is not shared with third parties without their approval.