Why is my site getting error reports from users with iOS7 on a MacBook? I've asked this question already on Stackoverflow though got referred to this forum here.

I got a list of Safari bugs that happened on a MacBook running iOS7. I am a bit confused now as afaik iOS7 is an operating system for iPads and iPhones only - or am I wrong? 

PS: I am aware that my question might sound a bit odd but I am used to Windows (cough, cough) and don't know much about Macs and their operation systems.
Ruling out a possible hack to get iOS to run on a MacBook natively (which would get a lot of publicity), I can see the following options


Users didn't know enough about their system and just picked the things most likely (which means that you could have error reports from users with OS X 10.7 on a MacBook as well as from some with iOS7 on an iDevice mixed together)
One or the other is just the default option when filling in a bug report on wherever you are getting them from and people are lazy
Users have been accessing your site via the iOS simulator on OS X. Possible but rather unlikely (unless you have a very special site :-)