I've been using FCD for a couple months with a 2000-card text-only deck (and a couple smaller text-only decks, but that was the one I spent 99% of time time in). This week I've been trying out a small deck with images, and a larger deck with sounds.
I ran into a number of issues with just getting the cards imported -- I'll write up a list of the issues I had later, because that might be of interest to you.
But this week I've been running into an awful lot of crashes. (That's what "spontaneously exits and goes to the iOS home screen" is, right?) Crashes at times like:
- when rotating the screen with an image on it
- when switching back to FCD from another app, or leaving FCD to go to another app
- when importing a new deck (especially!)
I'm doing a binary search of imports right now, to see if there's a particular line that it's dying on in my deck. I guess it isn't a terribly useful report, to say that the app tends to crash a lot, but I don't know what else I can give you. :/