Thank you for your post.
I see the author of CustomerList has responded and modified the function. No reply to date from the author of ApplyToList function.
Thanks. As far as I know, though, her response is a guess. There are many areas where FileMaker needs to document the differences and limits of GO and AFAIK we do not have that documentation yet.
The only documentation we have at this time are Knowledge Base Articles #7733, 7734, and 7743.
Knowledge Base Article #7756 shows the differences between FileMaker Go on an iPad versus an iPhone/iPod touch:
Optimizing your solutions for FileMaker Go can be found in Knowledge Base Article #7759:
Finally, there is the FileMaker Go Development Guide:
These articles have been updated for the recent release.