It looks like this will be the first sceptical comment... ;)<p>I didn't try Fries, but I tried using PhoneGap for prototyping and found that building such a web app is not much faster than building one in XCode (and I was a web developer for nearly 15 years!). So why bother?<p>Another problem is that if I want to build prototype in your framework, I must learn its conventions (what was that CSS class again, "buttonnormal" or "button-normal"? Since the web frameworks can't really compete with native apps in terms of user experience (behaviour of UI elements differs from what user expects), I will have to build in Objective C - which means I have to learn both iOS programming AND your framework.<p>Granted, such a tool would be useful if UX team wants to build prototypes and they only have web knowledge - and you have a separate team for building a final (native) version. Other than that I fail to see a point.<p>I would love to be proven wrong though. :)<p>BTW, my comment doesn't apply to Titanium which basically produces a native app (but I don't use it for other reasons).
Pretty cool ... reminds me of ratchet <a href="http://maker.github.io/ratchet/" rel="nofollow">http://maker.github.io/ratchet/</a><p>Why would you use that only for prototyping and not in production?