El Simulador is a free finance application for Android developed by Manuel Alonso Talledo Rondoy. It is a credit quota simulator that calculates the fee to be paid based on an interest rate (TEA) and disbursement amount. The app also takes into account payment dates, insurance deductions, and the ITF (Tax on Financial Transactions). The calculation method is valid for Caja Piura, but it can be used as a reference for academic purposes.

With El Simulador, users can calculate a fixed fee that does not consider expiration dates on Sundays or holidays. It also calculates the quota for Free Amortization, with suggestions for daily, weekly, or biweekly payments. The app includes a converter for Annual Effective Rate (TEA) to Monthly Effective Rate (TEM) and allows users to save simulations with their name for future reference. Additionally, the app has the option to customize its color scheme.