I am looking for some advice as i have an idea for an application that i either need to build myself which i think will be far to complex for my ability or alternatively get an idea of price to build the application from a developer.

I currently have an Excel spreadsheet to calculate the information for me but i want to offer it out to other people on the cloud as a subscription so customers can access the application from anywhere.

I know the possibilies are endless however i am looking at the following:

Customer portal allowing individual customers to sign into their own account and manage their own data via input and the data will need to be calculated and display with a dashboard to show reports of profit and many other statistics.

I know this isnt much to go by but i have tried to upload the Excel file to show what is needed but the file is slightly too big.

Help and advice would be much appreciated

Thanks Chris