Ad agency VCCP has launched an iPad app that turns the tablet into a digital lightbox for tracing images and creating scamps.

Devised by VCCP creatives Matthew Benney and Brendan Howell and developed in-house, the free Ad Scamp app allows the user to create a composition of images on screen, and then turn them into a line drawing. The user then places the iPad under a sheet of layout paper and traces the image through with a non-permanent felt tip pen or pencil, helped by the brightness of the screen.

We're a little unsure if using a pen or pencil directly over the top of an iPad is a wise idea – and we'd recommend using a screen-protector if you use the app. And pressing very lightly indeed.

The app includes a number of useful tools that aim to make scamping quick and easy. As well as being free to add any amount of images to the composition, the user can move, rotate and scale them with touch controls. There is also a trace tool that locks the screen to all touch input – so it doesn’t ruin the composition when the user is tracing – and pumps the brightness up to full. It also turns the images into bold outlines to make it easier to trace.