I just heard about an ap for the iPhone that is a projector calculator (apstore link). I was wondering if anyone has used it and if it is worthwhile. Of course, I don't own an iPhone and have no plans to own one, but still thought this might be interesting to see if it's a worthwhile program.
Software designed to determine the size of a projected image, given the variables such as length away from screen, lens ect. It also estimates the amount of keystoning needed for such a result.
In the app store, some people like it, some don't. I know it is a dollar cheaper then the one Derek quoted. 5 five star ratings, 6 four stars, and a total of 5 stars for 3, 2, and 1 star ratings so it must be popular.