Poll Daddy is an iPad app that is probably a cell phone app too.
Also, Google forms could work. 
We might use eClicker with the iPads. It is a free app for students but the teacher has to have a $10 eClicker host.

Anne

On Sun, Aug 21, 2011 at 9:16 PM, Laura Girr <[log in to unmask]> wrote:
Hi all,

I would love some recommendations about free software for instant polling.  We will probably use laptops to respond to the questions but I would like to hear about cell phone apps as well.

Thanks for any info.

Laura Girr