A few years ago there was a chap round here [met on a TP meet a couple of times but his name has managed to vanish into the pit at the back of my brain] who created a model release form that you could store on your phone and use if out street shooting. Now ok, it was simple, something along the lines of a pdf document as I recall, that could be signed on the spot - I seem to recall this was as touch screen phones were becoming pretty much the norm.
I know a few people used it, I had it on my phone though never had a need to use it, but it seemed a nifty idea to have for those rare occasions when it might be needed.
So, that long winded waffle brings me on to the point - does your app work well and do what you need it to do? If so, then why not give it a go, maybe in conjunction with paper contracts to begin with, just to be sure.
Next, I don't use an ipad, so forgive me if this isn't something you can do on one, but could your own paper version be loaded electronically onto the ipad and do the same thing?
Anyway, I know none of this actually answer the question, but just thoughts that came to my mind that you might, or possibly won't, find useful![]()