Use iVisualiser to create a live video feed of your document or image. Annotate freely around screen with a variety of colours and line thicknesses. You can record a video of the screen as you annotate and can even record a live commentary at the same time - this will automatically save to camera roll for playback and/or review at a later point.
iVisualiser is the perfect presentation tool for both education and industry alike. Carefully designed to be incredibly simple to use, iVisualiser is a powerful app for collaboration, still-image and live video annotation and review.
Via Baiba Svenca, Becky Roehrs
The new app by Alan Peat turns your iPad into a visualiser which lets you take a photo, zoom in/out, annotate on the screen, record screen action and live comments.Perfect for demonstration purposes in education.
Watch the tutorial http://vimeo.com/111339463.
Not free but looks awesome!