This is a full working simulation of the ancient Greek device dating back two millennia, accidentally discovered a century ago on a shipwreck near the island of Antikythera.
The crank input can be controlled by the point slider at the bottom, enabling clockwise and anti-clockwise motion at varying speeds. Use the swipe rotate and pinch zoom features to navigate in and around the mechanism. Another point slide is also available at the side for panning vertically. The Calendar dial can be rotated using the + - controls on the bottom left of the screen.
Two viewing modes are available for selection at the top; the external mode offers a detailed look at all the dials and the internal mode offers a close inspection of the gear arrangements which drive all eight outputs.
WARNING: Due to the high graphics requirements to run this app, it may not work on iPhones 4s or previous generations, or 2nd generation iPads and below.