Wanted to give to iOS app a go just now. The App Store says: "must upgrade to 7.1 or later to use this app".
I'm on 7.0.6, not too far, and yes I probably should upgrade.
However, a couple of points:
I'm on a rather poor 3G at the moment so upgrade right now isn't quite feasible;
I'm wondering, are there really some features in the app which requires 7.1, perhaps it's is just because it was some kind of default setting in the compile targets, but other than that no other strong reason?
some people can't upgrade because they need to maintain certain version.
I will upgrade eventually, but you know, might be worth a quick look if requirements could be lowered to 7.0.x. Or even 6.x.