Can I capture screen video on iPhone?

Hello-

I'll preface this with I'm not a developer and don't want to jailbreak my iPhone... 😀

Wondering what the recommended ways are to capture screen video on my iPhone.

I don't believe there is an app that allows this on a non-jailbroken phone.

My goal is to capture video from the use of an app I purchased that is location dependent - so I would be outside while using the app. Basically like filming a tutorial.

At worst I suppose I stick a camera on a tripod and then video the iPhone while using, but wondering if there is a much better option!

Thanks all-

This for an iPhone 3GS or 4S.