Calculadora IGV Perú is a free Android application developed by Diordi Apps. This app is designed to help Peruvian businesses and individuals to calculate the correct amount of General Sales Tax (IGV) for their invoices. The app's interface is straightforward and user-friendly, with only a few options available to the user.

The app's main feature is the calculation of IGV, which is done by entering the base amount, IGV, or the total amount. The app then displays the result instantly, showing the base amount, IGV, and total amount in numbers with two decimal places. Additionally, the app provides the correct spelling of the total amount in words, which is a critical requirement for any invoice in Peru. Finally, the app also displays the system date, which can be used to write on the invoice.