Hand wringing aside, there's no substitute for live data for app testing, because it contains numerous anomalies, misformatting, garbage characters, overloaded fields, unknown codes, etc. (inherited from prior apps that touched it) that will crash your app, making you look super bad in front of powerful end users. No data generation tool can deliver the precise data quality problems seen in large-firm datasets, so get over it. The developers are under NDA, and it makes no sense to do otherwise, as the field survey data clearly shows!