Percentage Calculator

Simple to use, stylish calculator that will greatly simplify the calculation of interest.
The calculator is able to calculate:
- Simple interest (to find the percentage of the number)
- Tips (now you will always leave a tip :)
- Discount (find out how much money you will save on the product)

Features of this application:
- Stylish design
- Ability to select the application for registration of topics
- Fast calculations
- Intuitive interface