Japan's GClue has unveiled Pocket Clapper, an iPhone/iPod touch app that simulates the clapboards used while filming movies. Users can draw virtual chalk on a blackboard, outlining a scene with production information such as date, time, camera, director, scene, and take, to be used later during movie editing. The app also replicates the clap sound used to align audio and video content that have been recorded on separate devices.

Users can zoom in on the chalkboard to add more detailed information, and in either view writing can be deleted as necessary. English and Japanese languages are supported. Pocket Clapper is available from the iTunes App Store for $1.