It is just a simple calculator made with HTML, CSS and Jquery.
Having a computer degree and working as a programmer for 3 years(I still code, but give more time to paint), it is very easy for me to code this.
I completed this in just few hours. I kept the design simple and minimal because I didn't want it to look confusing. I focused more on the functionality.
I published it on github because for now I can't afford to have a paid hosting service.