From Zentropy Software:
Turn your iPhone or iPad into a pointer and controller for PowerPoint or Keynote presentations. Has 'Next Slide' and 'Previous Slide' controls, and can show notes from presentations on the iPhone display along with a timer. Pointer icon can easily by replaced by any image, which could be used for humorous purposes. Touch the screen to show the pointer - which is controlled either by dragging your finger around the screen (easy) or by orientation (takes a little practice) - your choice.Requirements: Computer running Mac OS X 10.6 or 10.5 (it does NOT work on 10.4 or on Windows), WiFi connection (on the same local network or by creating a computer-to-computer network), and PowerPoint 2011/2008/2004 or Keynote '06/'08/'09 (choose program on the back side of the App).A small Mac application, PointerServer, must be downloaded to your computer and started whenever Pointer is used. This program is available for free at:http://www.zentropysoftware.com/ZS/Pointer_files/PointerServer.zipPlease note that the presentation runs on your computer, not directly from the iPhone or iPad. Instead the iPhone/iPad controls the computer.A support e-mail address is listed at the support web site.
What's new in this version:
This is a major update that provides:- improved connectivity - both faster and more reliable- better slide image display- iPad interfacePLEASE NOTE: You must install the new version of PointerServer on your computer to use the updated App.Additional features of the update:- option for higher resolution images for iPhone 4/iPad- new pen option- numerous bug fixes- better interaction with new version of PowerPoint- pointer feature takes advantage of gyroscope when not in "point by dragging" mode