The OctoCue Presentation Remote app allows presenters to control remote slideshows running on PowerPoint, Keynote and Google Slides from their Android devices.

It supports PowerPoint, Keynote and Google Slides, and include real-time notes feedback for presenters.

Note that this is just one part of the OctoCue system. Your event team will need to setup the other parts for you, and supply a show code (or shared link) so you can control your slide deck.