Create a software program

Hi there, I would like a software program created based on a spreadsheet with formulas and another one based on a PHP file. In the software I am looking for it to be designed in a way that it does not look like a excel spreadsheet. Something fancy and professional looking. You can check the spreadsheet below. The user can fill in the yellow boxes and get three different results based on the 3 different options (tabs): Balloon at the end, 50% monthly cashflow or monthly cashflow. Please check the PHP file as well. I want software for this as well and again to be fancy and professional looking. You can see the file running on [login to view URL] Thanks