thanks for the links from me as well. They confirm what my initial understanding was about the creation of the app. It wasn't as if the developer just pulled it out of thin air but went the extra steps to make sure it was done well and seems from the heart. To me it's the irony of the low tech side of a church, any church, vs. the high tech and actually expensive devices like the iOS devices. Nice to read more of the background of the app.
In a way I thought of it as Turbo Tax for your sins. Run a few what-ifs then head off to face the music.