Easily and quickly calculate the IGV (general sales tax) from the Subtotal and Total.
Check when you declare and look for the RUCs that are good contributors.
Receive notifications two days, one day before and the same day of each Declaration.

Install and use.

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Details of permits. Why are certain permits required?
Wifi: Necessary to be able to test the Internet connection and receive notifications.
Receive data from the Internet: Required to receive notification data.
See network connections: Required for the previous points.
Start at the beginning: Even if you do not open the application you will still receive notifications.
Control of mobile vibration: Necessary to be able to alert you with vibration notifications.
Prevent the Device from going into suspension: Necessary so that the screen does not turn off while you are using the application.