Just like iPad version we reviewed back in January, SyncPad brings the collaborative whiteboard to your pocket with a spiffy iPhone version that includes recently added Dropbox support. If you’re not familiar with SyncPad, you can mark images and PDFs over the web by simply creating a free private room where you can upload your presentation materials from your library, or from Dropbox. You can also save the final results of your presentation as an e-mail attachment, or upload it to any folder of your choice in Dropbox (no default folders here). You’re given a variety of highlighters to work with from blue, red, green, and black which can be resized and erased as you dot about striking through lines of text or drawing silly images. It’s $4.99 in the App Store, and don’t forget to have your constituents download the free reader for viewing your presentations on the iPad.