Powerpoint Remote iPhone to iPad

I use the Powerpoint App on my iPad for presentations and need a remote for it. Is there any App for the iPhone or hardware presenter existing? It works perfectly woth Keynote on the iPad and Keynote Remote on the iPhone via Bluetooth but Keynote is not the App I like to work with. MyPoint and Click-r are just supporting Computers and Mac as device for the Powerpoint software but I need it for the iPad. Why isn't there existing remote stick with bluetooth instead if USB?