iOS App to ask and answer questions about a specific topic

[Poly]

I'm looking for an iPad iOS app that allows each user to submit questions in the app using their iPad.
These questions should be sent to something like the "host" iPad/PC/whatever to be answered within the application.
The app should also support the typical API to be used with a projector. That's because I want to project the question and its answer on a screen using the host device.

The use-case will be at a keynote where two people will train 10-20 people. While one guy is presenting the other one could answer questions the pupils submitted.

If somebody has an idea, I'd appreciate your input!

Thanks 🙂

 

[biosci]

I'm looking for the same thing! Been searching for the past couple of days.

 

[Poly]

I'm looking for the same thing! Been searching for the past couple of days.

Hope we'll find something with combined power^^
I already looked into Google Moderator but it forces you to create a Google account, which is a no-go for presentations.