You can sign ipa files with your developer (private) key. There's an app called InstaSign that I use for "testing" apps before purchasing them. You download a cracked version, sign it with your own key (so iPad thinks YOU have created this app, like when you do in Xcode) and see if it's worthwhile.
It's saved me a lot of money that otherwise would've wasted on scammy, buggy, "not-working-as-advertised" apps. If you're a developer (i.e., can sign apps and load them unto your device), give InstaSign a try.
They're probably using a similar method (as they seemingly test on iPad/iPhone, retina/non-retina, iOS5/6 devices and it might be a bit more work for you to add at least 6 new UDIDs).
It's saved me a lot of money that otherwise would've wasted on scammy, buggy, "not-working-as-advertised" apps. If you're a developer (i.e., can sign apps and load them unto your device), give InstaSign a try.
They're probably using a similar method (as they seemingly test on iPad/iPhone, retina/non-retina, iOS5/6 devices and it might be a bit more work for you to add at least 6 new UDIDs).