If you do any development on iPhone or iPad, then you need to go over and
sign up at testflightapp.com right now. Do not pass go, do not collect
$200. It’s the best solution to distribute builds of your app to beta testers.
Signing up your beta team is effortless. You can even hand out a link to others
for recruiting. Deploy with a quick shell script using their api. Your users
install the app over the air without connecting to iTunes. They even give
analytics so you know who installed what version and when.
And it’s free.