Nice to see BB here! We used BB to build our iOS app; over 3 months, it made the process of iterating, deploying and collecting feedback on our prototypes incredibly easy. Great product and a very proactive team. One feature that BB has that is particularly useful is the ability to deploy test builds to various groups. We deploy a build internally to our team group at least once daily, and then another more polished version to our most avid beta-testers at least once a week.