Yes, we have it.
You can check out the app in iTunes here.
Features include a schedule quick-reference, information about the conference as a whole, and a brief nod to the participating sponsors.
The app is named 'SciOnline10' due to the (visible) naming restrictions on the device. Searching for Science, Online, or ScienceOnline2010 (or the app name, SciOnline10) will find it on the App Store if the link doesn't work for you.