PPTController & PPTControllerHost are two apps which can help you control your PPT through your Phone.
PPTControllerHost is a Windows form app which install on your computer side(by WPF), which one you are going to have presentation. It will listen the control commands from PPTController to perform the following operations to your PPT, start your PPT, switch your PPT between "Fullscreen mode" with "Preview mode", navigate in your PPT.
Is a Windows Phone app (currently support windows phone & Andriod platform) which installed your phone side. Send the control commands to PPTControllerHost after a connection was established between them.
Before the installation of PPTControllerHost. Please make sure your computer had installed .Net Framework 4.5
How to config PPTController & PPTControllerHost? See PPTController& PPTControllerHost Functional description to learn it step by step.
See this page to if you meet similar problems.