Pointer Remote
Zentropy Softwares Pointer is the fourth controller I have tried and, so far, the only one that will allow me to move quickly and easily between controlling a presentation and entering data on an unrelated web site without having to re-connect the controller Wi-Fi every time I return to my presentation. In addition, the pen and cursor functions work quite well, and the oval and box features are an unexpected, and very nice, bonus.
I just wish it had Presenter Mode so that I could see the upcoming slide before I show it to my students.
It really is the best Wi-Fi PowerPoint controller in the App Store.
slowmodemjohn about
Pointer Remote for PowerPoint and Keynote, v2.0