I have been using pinhole assist for a while now, and it is really becoming a useful little app.

A question and an observation:

Question: What is the difference between the ASA setting on the exposure page and the ASA setting on the film page? I'm pretty sure I know what the latter does, but not so sure about the former.

Observation: I seem to get longer exposure times (1.5-2x) using this app (without accounting for reciprocity) than by using zero image's wheel or the pinhole designer charts. Am I using the program incorrectly, and is that somehow related to my question?