I am just an Excel workhorse, an old broken down one at that. I have no idea how it will work other than with my version and my OS. Obviously, the add-in must be local and the code is not embedded in the sheet as VBA would be. In that respect, I can't imagine it would ever work on an iPad. However, i give it an even shot of working on your Mac.

The good news is, it's possible and if it can be done with an add in, it probably can be done with VBA. However, that would be well beyond my capability. Perhaps someone here knows. Pecoflyer and macropod are two that come to mind though PF seems to have a fear of flying. ;-)

I will reach out to the developer and see if possibly he would share the code for this function.