I have an excel sheet .xlsm that contains formulas and macros which are currently used for some calculations. It is basically an app built into excel. All I need to do is to convert this excel file to an app that can run on iPad. 

The problem is that has dropdowns, checkboxes and lots of formulas written in it and in formulas, there are references to the cells and functions in excel that is really confusing me to trace out what is really happening when I input some value in some cell. Also, the VBA project associated with it is password protected. 

Is there any way using which I can convert the functionality of this excel file to an app for iOS.