This app is promising but, for me at least, is not as good as the Apple version. It seems to be hit and miss when tuning slides whereas the Apple version never misses a beat (this is a killer issue for me). It also seems to make my transitions stutter for some reason. It requires a separate app running on your Mac whereas the Apple version does not. Advantages over Apples version is that you can quickly jump to individual slides. I am running Keynote 09 and 10.5. Both apps suffer from being dicky to connect and get going with a computer-to-computer network, which can be embarrassing at the start of a presentation.
kiwilegal about Pointer Remote for PowerPoint and Keynote