I downloaded an app someone else purchased a few months ago before updating iso software at least once and syncing. And I did this by logging out of my account and logging into theirs from my iPad and logging baxk into mine. For a while I couldnt update because they changed their password and I was logged into my account but today I notice an update button in the app description and when ainclicked it it only asked for my current account's password and is updating as I speak. So What gives? Was I harged somehow or because of the sync and ios update?