A repair shop tells you the battery is worn. You have no way to check. PhoneVitals reads the iPhone's own telemetry over USB - real cell health and cycle count, whether the screen, battery or camera is a non-genuine part, kernel panic logs decoded down to the failing board component - and prints a report your customer verifies by scanning a QR code. Windows, no jailbreak, nothing installed on the phone. First scan on each PC is free and complete. After that $0.40-0.99 a scan, no subscription.
