Yes, as the title says, yet another iPhone application. By the way, I don't work for Apple. This time it is from the watch company Kienzle. The application displays one of Kienzle high-end watch, the Perpetual Calendar No. 4. This watch is from Edition Jakob Kienzle. The application is very interactive in that you are required to set and wind the watch. The watch displays the hours, minutes, central seconds, date, day, month, leap year and 24H. The application will also display the movement via the display case back. The downside? This is a paid application.
What you see on the back.