This tool is used to export an apple ipa file directly.
Providing the ios provisioning profiles, it can export the ad-hoc and the release version of ipa files at the same build.
It is easy to config, as all of the signing info are extracted from the provisioning profiles.
And you do not have to know the Apple account's password which may not be controlled by the developer.
All scripts are provided, you can change it as your will.
It will save you lots of time from building, testing and publishing.