Is there a framework for both Android and iPhone development in C#?
Basically we're looking to develop a relatively simple application, but we only want to do it once. We're a .net development house. As that is our strength, we'd like to stick with that.
I've seen Mono for Android (http://xamarin.com/monoforandroid). Is this good? Does anyone have experience using this for both Android and iPhone?
Mono for Android will only allow you to develop Android apps, not iPhone apps. For iPhone apps, consider using MonoTouch. I don't have any experience using these, but keep in mind that they are not free.