Document scripts not translating to mobile devices

Hi Everyone,

I created a coaching evaluation form, with the help of this community. It has numerical evaluation fields that were averaged and populated another field. Those results then populated as a text value in another field. 

I sent this out to our national body, not knowing that I had an issue where the formulas work on a conventional operating system, but they do not work on iOS specifically. Coaches having the ability to use their mobile devices while doing these evaluations was the point of the project in the first place. I have Acrobat and the default PDF viewer on my iOS devices, and I can only use the drop downs to populate the evaluation fields. The averages and text formulas don't function.

Thoughts?