Apple only offers older versions of your app to users that have previously purchased it. New users will still get the traditional "this app requires iOS 7" failure message.
I believe you can purchase apps you haven't purchased before. The writer of the article I read on this tried it. I've downloaded free apps whose latest versions weren't compatible on my device, and got the older version that works for my old (iOS 3.2) device a couple of months ago.
hrabago|12 years ago
dmpatierno|12 years ago