Whenever I'm sent UDIDs for a test device I add them to the devices list on our portal in developer.apple.com then I add the new device to the provisioning profile for the application then I re-export the compiled application with the new provisioning profile.
This is fun but when this is happening every other day it starts to become trivial. I've read about testflight but I want to make sure there isn't a better way that's already been established. What's the best way to do this?
Now that Test Flight is used by apple you can export for the App Store then upload to iTunesConnect as a pre-release and users can download the IPA as long as it has beta entitlements set.