For three days of real-device testing, the app worked, or seemed to. Every test passed. Every review came back clean. On a real phone, it had never once been installable, and nothing had ever said so. This is a proof-of-concept, not an NHS product. It was built by one technical person working alongside an NHS dietetic team. No patient data exists anywhere in it. Nothing leaves the device unless a lookup runs, and even then it sends nothing but the barcode number itself. Clients had been ...