Hi,
Can you tell me if this application is designed to run on Windows (or Linux) please?
Also, do you know what compiler was used to develop the code? Visual C++/Visual Studio?
I would need to take a look at the code and it's complexity , before I can estimate time and cost- but if it's in C++, rest assured , I can help you with these improvements.
If interested, do read through my profile and get back to me.
Thank you.