We should talk, because I've developed a lot of the stuff you're doing (OTA distribution, analytics, crash and error reporting, bug tracker integration) internally. This was back before both TestFlight and you launched, and we needed a solution so bad that we wrote our own. Would love to talk further if you're interested.
Also, the line about your documentation did not instill me with great confidence:
> HockeyApp provides an open and well-document API which is based on HTTP and JSON.