I think a lot of people didn't go to ios 6 because of the bad publicity about Apple maps. I don't think that's an issue anymore as Google maps is now available again. I've moved to 6 with no problems. I've downloaded your app and had a quick look at it, I'm sure it will be useful. I never felt like paying for the MDC as I've been processing film for decades with kitchen timers and written notes. But I won't say no to free.