One open issue is that from time to time a breaking change to our API is needed and a force-upgrade is forced on the app users. We try to avoid it, but it happens.
The next time this happens, it's really goodbye iOS 6 users.
Slightly off topic here. I'm a bit baffled by that app. It's a fugly - it seems like a pre ios 7 app that was resurrected in a few days and isn't very Appley at all. I wouldn't call is skeuomorphic, but it isn't the new(ish) flat look. The main screen's background just looks like someone forgot to include the artwork. Its a flat grey though, so must have been chosen. The clunky FAQ page isn't nice either, and a straight link to a web page would have been nicer IMHO.
One open issue is that from time to time a breaking change to our API is needed and a force-upgrade is forced on the app users. We try to avoid it, but it happens.
The next time this happens, it's really goodbye iOS 6 users.