Three in one:
* Discount calculator : Calculates how much is this after the sale. And how much you saved.
* Vat calculator : Calculates how much is the item costs withe the VAT. And how much is the VAT.
* Percentage calculator: Calculates the percentage between two numbers.

Application features:
* Fast.
* Small and light on the size of the device.
* Special and attractive design.
* Simple and easy to use.