Hi, Good day!
Thank you for reading my bid/post. Regarding your requirements, you mentioned you have designed it in Excel. I will be more than happy to help you develop it into a responsive web application, complete with login.
I have been in the I.T. development field for 20+ years and my works have all been converting design requirements into web or desktop applications.
My plan, should you accept me for the project, is to have a discussion with you about the tool you have, then I will analyze and get back for another round of discussion, so you will know if I have indeed understood what you need. I don't just ask you and dive into the development, then force you to use what I have developed (which is happening to some employers now).
I am looking at creating the web application using SQL Server (a free edition exists), .NET framework, bootstrap and angular JS. These are some of the latest technologies in the market now.
If there is anything else you need to know, please feel free to contact me and we can start a harmonious working relationship to better improve your business.