Pocket Clapper app for iPhone and iPad

This is a device called "Pocket Clapper" used for motion picture
production. "Pocket Clapper" is a pocket size gadget which can be used
for making a clap sound whenever it is necessary. It is also possible
for you to write the outline of a shooting scene on the blackboard in
"Pocket Clapper" with a white chalk. "Pocket Clapper" is a powerful gadget
which assists you to take motion picture. It can be used for adding
unique flavor in your motion picture, and synchronizing of picture and
sound when you take them separately.
You can zoom in or zoom out by double tapping.
You can draw or delete objects in both zoom- in and zoom-out modes.