Turn your iPad into a wireless whiteboard! Annotate PDF documents and images live. You can project PDF documents such as exported PowerPoints, to a computer on the same local network then annotate them in real time. Airsketch works like a mirror image of your iPad (viewed inside of the Airsketch App) that is projected by another computer through a shared website.
In other words, it does not connect your iPad wirelessly through the projector — it allows you to display your Airsketch to a website, which is projected by another computer.
For example, when you open Airsketch on the iPad, there is a small wireless icon in the bottom left. When you select that icon, it gives you the IP address that your display can be seen. When you open Firefox (or another web browser) on a classroom computer and put that address in the URL, you will see the same screen as on the iPad.
From there, you can display PDFs (but not PPTs unless they are converted to PDFs) via Dropbox; select the Send-To icon in Dropbox located in the upper right. You can also show images on your iPad’s camera roll.
Price: Free, $9.99 for all the features
Platform: iPad only
More Information: http://www.qrayon.com/home/airsketch/