But in reality the ones that I have seen suffered from being terribly slow. The last app demo that I saw using phonegap had 3-5 second loading bars come up every time a button was pressed. This was on Android so I am not sure if the platform was to blame or not.
The app is only has good has the html5 app behind it. On android it's tricky, we just did a test run for our mobile app & we have weird issues with a lot is samsung phones while other phones perform perfectly.
We also decided to remove animations on android for all phones below android 4.2 because the browser was to slow to handle them perfectly.
The app wasnt one I was involved in so I didnt have chance to mess around with it.